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These are the user uploaded subtitles that are being translated: 1 00:00:01,080 --> 00:00:02,640 NARRATOR: The United Kingdom. 2 00:00:03,640 --> 00:00:05,880 From a unique aerial view, 3 00:00:05,960 --> 00:00:09,680 we will show four countries that come together as one nation. 4 00:00:10,960 --> 00:00:12,880 Thousand-year-old traditions. 5 00:00:13,480 --> 00:00:16,080 One of a kind engineering marvels. 6 00:00:18,960 --> 00:00:22,360 The UK is a population of innovators 7 00:00:23,080 --> 00:00:25,320 who forged the modern world. 8 00:00:29,440 --> 00:00:33,040 In this series, we'll take an aerial tour across Europe, 9 00:00:33,840 --> 00:00:36,760 seeing its sights from a brand new perspective. 10 00:00:37,920 --> 00:00:41,400 Filmed from above and over the course of a single year, 11 00:00:42,080 --> 00:00:45,920 as the landscape transforms through the changing seasons, 12 00:00:46,320 --> 00:00:50,800 we will uncover the culture, history, and engineering 13 00:00:51,440 --> 00:00:54,760 that built the great European nations we see today. 14 00:01:03,520 --> 00:01:04,880 The Untied Kingdom 15 00:01:05,440 --> 00:01:08,800 is an island nation in Northwestern Europe. 16 00:01:10,960 --> 00:01:13,880 Separated from the mainland by the English Channel, 17 00:01:14,400 --> 00:01:18,320 the UK has forged its own path from the rest of the continent. 18 00:01:20,240 --> 00:01:25,800 It's made up of England, Scotland, Wales, and Northern Ireland. 19 00:01:27,280 --> 00:01:33,160 Each country has its own unique landscape, culture and sense of identity. 20 00:01:35,880 --> 00:01:39,800 It's April, and across the nation the weather is warming up. 21 00:01:42,520 --> 00:01:47,080 Trees shrug off their snowy blankets and fill their branches with blossom... 22 00:01:49,920 --> 00:01:52,520 as spring comes to the UK. 23 00:01:58,240 --> 00:02:01,920 In England's capital, London, it's as busy as ever. 24 00:02:03,120 --> 00:02:07,000 A bird's-eye view reveals how this 2,000-year-old city 25 00:02:07,520 --> 00:02:12,040 is densely packed with unique architecture and engineering wonders 26 00:02:12,480 --> 00:02:14,480 seen nowhere else on Earth. 27 00:02:15,440 --> 00:02:19,080 The Houses of Parliament, the nation's seat of government. 28 00:02:20,240 --> 00:02:21,640 St. Paul's Cathedral, 29 00:02:22,080 --> 00:02:25,440 renowned for its iconic 30-meter wide dome. 30 00:02:27,040 --> 00:02:31,040 Tower Bridge, the city's world-famous suspension draw bridge. 31 00:02:35,000 --> 00:02:39,200 From high above the clouds, London appears huge. 32 00:02:40,680 --> 00:02:44,960 A sprawling metropolis stretching around 50 kilometers across. 33 00:02:46,040 --> 00:02:48,480 It's home to around nine million people. 34 00:02:52,520 --> 00:02:54,560 Zooming in on the city's heart 35 00:02:55,800 --> 00:02:58,280 reveals a cluster of high tech buildings 36 00:02:58,720 --> 00:03:01,680 that soar above London's traditional landmarks. 37 00:03:04,400 --> 00:03:08,880 These are the towering skyscrapers of London's famous financial district. 38 00:03:11,400 --> 00:03:15,560 Each stunning new mega structure has a uniquely engineered form. 39 00:03:18,640 --> 00:03:20,320 Perhaps the most striking 40 00:03:20,400 --> 00:03:23,160 is the giant glass clad Leadenhall Building, 41 00:03:24,720 --> 00:03:27,720 famous for its unusual wedge-shaped design. 42 00:03:30,080 --> 00:03:34,560 This breathtaking structure is 225 meters tall. 43 00:03:36,160 --> 00:03:40,000 Its steel core weighs almost 18,000 tons. 44 00:03:42,120 --> 00:03:47,480 And 4,220 glass panels cover its angled facade. 45 00:03:55,080 --> 00:03:57,920 Pawel Urban is more familiar than most 46 00:03:58,000 --> 00:04:00,880 with the Leadenhall Building's shining glass panels 47 00:04:01,280 --> 00:04:04,520 because it rests on his shoulders to clean them. 48 00:04:05,400 --> 00:04:09,080 I prefer to doing this job when it's sunshine like this. 49 00:04:09,480 --> 00:04:10,520 Nice weather. 50 00:04:12,320 --> 00:04:16,200 NARRATOR: Today, Pawel and his crew are cleaning the Leadenhall Building. 51 00:04:18,000 --> 00:04:22,120 To do this, the team uses a specially designed mechanical arm 52 00:04:22,520 --> 00:04:25,480 which carries a metal cradle down the side of the building. 53 00:04:27,680 --> 00:04:29,920 But the team can only go over the edge 54 00:04:30,240 --> 00:04:33,480 when the wind speed is less than 40 kilometers per hour. 55 00:04:35,240 --> 00:04:39,040 This is to make sure the cradle doesn't swing precariously 56 00:04:39,120 --> 00:04:41,680 in the strong breeze and damage the glass 57 00:04:42,960 --> 00:04:45,840 or come detached from the crane altogether. 58 00:04:48,720 --> 00:04:52,520 The wind has been howling at over 50 kilometers per hour all morning 59 00:04:54,320 --> 00:04:56,520 but the crew notice a lull in the weather. 60 00:04:57,840 --> 00:04:58,720 URBAN: Not windy. 61 00:04:59,600 --> 00:05:00,960 Only three miles. 62 00:05:04,080 --> 00:05:07,720 NARRATOR: The team get the go-ahead to begin their extraordinary descent 63 00:05:07,800 --> 00:05:10,000 down the face of the glass skyscraper, 64 00:05:11,040 --> 00:05:12,560 but they need to work quickly 65 00:05:13,040 --> 00:05:15,200 to make the most of this lucky break in the weather. 66 00:05:16,760 --> 00:05:19,080 URBAN: The first time when I was in the cradle, 67 00:05:19,160 --> 00:05:21,800 I was very scared but now I'm all right. 68 00:05:23,960 --> 00:05:28,200 NARRATOR: Aerial cameras reveal this extraordinary process up close. 69 00:05:35,760 --> 00:05:39,240 Unchecked, the further the cradle drops on its cables, 70 00:05:39,560 --> 00:05:41,800 the more it risks swinging in the wind. 71 00:05:43,960 --> 00:05:47,320 So architects built this skyscraper with seven channels 72 00:05:47,400 --> 00:05:49,560 running down the south face of the building. 73 00:05:52,040 --> 00:05:55,880 The cradle has specially designed rails that lock into these channels. 74 00:05:57,960 --> 00:06:00,960 The rails help stop the cradle blowing in the wind. 75 00:06:03,560 --> 00:06:05,280 But as the hours tick by, 76 00:06:05,600 --> 00:06:09,000 spring's unpredictable weather starts to turn. 77 00:06:10,960 --> 00:06:13,040 URBAN: Sometimes it's very windy 78 00:06:13,120 --> 00:06:16,840 and we have to go up quick 'cause it's very dangerous for us. 79 00:06:18,160 --> 00:06:20,080 NARRATOR: With the wind picking up further, 80 00:06:20,440 --> 00:06:22,720 Pawel and his team finish their last window. 81 00:06:24,480 --> 00:06:27,240 They've managed to complete two sections of the building 82 00:06:27,320 --> 00:06:29,240 in the short time they've been cleaning. 83 00:06:29,840 --> 00:06:34,320 But with the Leadenhall Building's 4,220 panes of glass, 84 00:06:34,880 --> 00:06:38,040 it's a full-time job to keep the city's skyline glistening. 85 00:06:39,040 --> 00:06:40,160 URBAN: Well, see the windows. 86 00:06:40,240 --> 00:06:41,520 We are on ground floor. 87 00:06:41,600 --> 00:06:42,560 Nice and shiny. 88 00:06:42,640 --> 00:06:43,520 Nice and clean. 89 00:06:43,600 --> 00:06:45,120 So I'm very proud and happy. 90 00:06:45,680 --> 00:06:46,840 We're doing a good job. 91 00:06:49,880 --> 00:06:53,960 NARRATOR: As London's daredevil window cleaners climb down from their rig, 92 00:06:55,640 --> 00:06:57,240 across the Irish Sea 93 00:06:57,600 --> 00:07:00,880 it's time for another mega-sized spring clean. 94 00:07:03,440 --> 00:07:07,240 Northern Ireland is the United Kingdom's smallest country. 95 00:07:09,200 --> 00:07:14,200 Belfast, the country's capital, is a port city steeped in history. 96 00:07:15,800 --> 00:07:18,760 Home to the world-famous launch site of the Titanic. 97 00:07:21,440 --> 00:07:24,400 Northern Ireland is a land of epic landscapes 98 00:07:24,800 --> 00:07:28,560 from rugged countryside to mythical coastlines. 99 00:07:31,120 --> 00:07:33,840 On its northeast coast, in County Antrim, 100 00:07:34,520 --> 00:07:36,040 sits a natural wonder. 101 00:07:37,480 --> 00:07:41,280 This jet-black shoreline is called the Causeway Coast. 102 00:07:42,240 --> 00:07:45,600 It's a 60-million-year-old geological marvel. 103 00:07:48,280 --> 00:07:52,720 A bird's-eye view reveals a world-famous part of this coastline 104 00:07:52,800 --> 00:07:54,400 called the Giant's Causeway. 105 00:07:56,520 --> 00:07:59,560 It's a bizarre lattice of around 40,000 106 00:07:59,640 --> 00:08:03,200 60-million-year-old interlocking hexagonal pillars. 107 00:08:06,560 --> 00:08:11,200 The Giant's Causeway is Northern Ireland's most visited tourist attraction. 108 00:08:12,240 --> 00:08:14,160 But because it's near the busy shipping lanes 109 00:08:14,240 --> 00:08:15,920 of the Atlantic and Irish Sea, 110 00:08:16,800 --> 00:08:19,760 the coastline encounters a lot of marine debris. 111 00:08:22,280 --> 00:08:24,200 This means that every year, 112 00:08:24,280 --> 00:08:27,400 the Causeway Coast is in need of a spring clean. 113 00:08:29,400 --> 00:08:31,200 ETHERSON: Today we're gonna see what we can do 114 00:08:31,360 --> 00:08:32,800 at removing a lot of the plastic 115 00:08:32,880 --> 00:08:34,520 that's in the bays here at the Giant's Causeway. 116 00:08:35,640 --> 00:08:39,040 NARRATOR: Barry Etherson is a local water sports instructor. 117 00:08:39,800 --> 00:08:42,640 He's part of a dedicated group of volunteers 118 00:08:42,720 --> 00:08:46,440 who clear up unsightly marine rubbish from the Causeway Coastline. 119 00:08:49,000 --> 00:08:53,720 Today, Barry and the team aim to clear four kilometers of coastline 120 00:08:53,800 --> 00:08:55,560 around the Giant's Causeway. 121 00:08:55,920 --> 00:09:00,000 Picking up everything from nylon fishing nets and car tires 122 00:09:00,400 --> 00:09:03,840 to plastic oil drums and even flip flops. 123 00:09:05,160 --> 00:09:07,320 But the seaweed and hidden rocks 124 00:09:07,400 --> 00:09:10,120 make it too dangerous for boats to get close enough. 125 00:09:11,440 --> 00:09:13,800 So the team turn to jet skis. 126 00:09:18,280 --> 00:09:22,320 The final few meters are too shallow even for the jet skis. 127 00:09:23,640 --> 00:09:26,360 So the volunteers must swim the last stretch. 128 00:09:27,600 --> 00:09:31,680 Careful to avoid the biggest waves smashing against the rocky outcrop. 129 00:09:34,160 --> 00:09:37,760 According to local legend, a giant called Finn McCool 130 00:09:37,920 --> 00:09:40,520 built these pillars as a bridge to Scotland. 131 00:09:42,880 --> 00:09:47,200 In truth, the Giant's Causeway is the result of a volcanic eruption 132 00:09:47,280 --> 00:09:49,080 sixty million years ago. 133 00:09:50,480 --> 00:09:53,000 As lava bubbled out of the ground here, 134 00:09:53,080 --> 00:09:55,720 it hit the sea where it cooled quickly, 135 00:09:56,400 --> 00:10:00,000 cracking to form the perfect hexagonal-shaped basalt pillars 136 00:10:00,080 --> 00:10:01,280 we see today. 137 00:10:07,480 --> 00:10:12,760 It takes Barry's team around six hours to collect more than 500 kilos of litter. 138 00:10:13,400 --> 00:10:14,200 (Barry grunts) 139 00:10:14,280 --> 00:10:15,160 (yells) 140 00:10:16,200 --> 00:10:19,760 Now, they need to get their haul back to the boat. 141 00:10:23,880 --> 00:10:27,760 Barry and the volunteers edge their litter sacks to the shoreline. 142 00:10:30,240 --> 00:10:33,160 The team need to scramble back to the jet skis 143 00:10:33,240 --> 00:10:35,400 fully laden with their bags of waste. 144 00:10:36,520 --> 00:10:38,880 A lot of the big sacks, they-- they catch and everything. 145 00:10:39,040 --> 00:10:41,080 They get caught in the barnacles and limpets. 146 00:10:41,640 --> 00:10:43,360 Yeah, it's just brute force really. 147 00:10:43,440 --> 00:10:44,720 Egging each other on. 148 00:10:46,440 --> 00:10:48,200 NARRATOR: Clearing the area of litter 149 00:10:48,280 --> 00:10:52,920 is about more than just safeguarding this region's extraordinary aesthetics, 150 00:10:53,000 --> 00:10:55,800 it's about keeping the ecosystem healthy, too. 151 00:10:56,480 --> 00:10:58,920 ETHERSON: Plastics break down into micro plastics. 152 00:10:59,000 --> 00:11:02,120 That gets into the fish. It gets into, inadvertently, people. 153 00:11:05,400 --> 00:11:09,120 NARRATOR: The volunteers load the trailer with their final haul. 154 00:11:09,520 --> 00:11:14,480 They've managed to collect an impressive 545 kilos of rubbish. 155 00:11:15,760 --> 00:11:19,080 Today's effort has helped preserve this iconic coastline 156 00:11:19,160 --> 00:11:21,720 in time for the influx of summer tourists. 157 00:11:22,280 --> 00:11:23,880 ETHERSON: There's a lot of people here who care. 158 00:11:23,960 --> 00:11:25,320 We appreciate it for its beauty. 159 00:11:25,400 --> 00:11:26,480 We work here. 160 00:11:27,720 --> 00:11:29,280 You kinda hope it stays beautiful. 161 00:11:29,640 --> 00:11:30,880 This is a very busy part of the world. 162 00:11:30,960 --> 00:11:31,960 A lot of people come here. 163 00:11:32,040 --> 00:11:33,320 For everybody to enjoy. 164 00:11:38,800 --> 00:11:40,360 NARRATOR: It's the beginning of June 165 00:11:40,840 --> 00:11:43,560 and the temperature across the nation starts to rise. 166 00:11:45,320 --> 00:11:48,400 Once empty beaches fill with tourists, 167 00:11:49,640 --> 00:11:51,560 as holiday makers flock to the seaside. 168 00:11:54,080 --> 00:11:57,040 Summer has arrived in the UK. 169 00:12:01,280 --> 00:12:03,360 In this warm, glowing weather, 170 00:12:03,440 --> 00:12:05,920 England's south coast fills with tourists 171 00:12:06,440 --> 00:12:08,600 seeking a traditional family break. 172 00:12:09,840 --> 00:12:12,080 From the white chalk cliffs of Dover, 173 00:12:14,040 --> 00:12:16,080 to Dorset's Jurassic Coast, 174 00:12:16,600 --> 00:12:18,160 these picture-perfect bays 175 00:12:18,720 --> 00:12:21,400 echo to the sound of an engineering masterpiece 176 00:12:21,960 --> 00:12:23,400 that changed the world. 177 00:12:25,760 --> 00:12:31,080 In the 19th century, British engineers invented and perfected the steam railway. 178 00:12:34,480 --> 00:12:39,320 They laid more than 32,000 kilometers of track across the British Isles, 179 00:12:40,400 --> 00:12:42,320 revolutionizing transport. 180 00:12:43,640 --> 00:12:45,440 On the South Devon Coast 181 00:12:45,760 --> 00:12:48,280 lies perhaps the most beautiful railway line 182 00:12:48,360 --> 00:12:51,720 Britain's industrial innovators ever conceived. 183 00:12:56,440 --> 00:12:59,440 This is the Dartmouth Heritage Railway. 184 00:13:00,360 --> 00:13:04,480 It's 11 kilometers of line stretching from Paignton in the north 185 00:13:04,640 --> 00:13:06,320 to Kingswear in the south. 186 00:13:07,400 --> 00:13:12,120 The railway offers nostalgic tourists a brief taste of a bygone age. 187 00:13:15,360 --> 00:13:17,080 It's up to Ian Wellington 188 00:13:17,160 --> 00:13:19,800 to keep the railway's collection of vintage steam trains 189 00:13:19,880 --> 00:13:21,040 in perfect running order. 190 00:13:24,280 --> 00:13:28,680 Each of these machines has its own unique character and nuances. 191 00:13:29,280 --> 00:13:31,280 WELLINGTON: Some people say they've got a personality. 192 00:13:31,760 --> 00:13:33,000 They are living and breathing 193 00:13:33,080 --> 00:13:36,240 because of how they work and the way they sound. 194 00:13:39,080 --> 00:13:42,400 NARRATOR: These vintage machines run on hot steam 195 00:13:42,480 --> 00:13:44,400 held at incredibly high pressures. 196 00:13:45,640 --> 00:13:50,480 The six engines in Ian's care have a collective age of over 500 years. 197 00:13:52,640 --> 00:13:56,080 So it takes all of Ian's 35 years of experience 198 00:13:56,160 --> 00:13:58,560 to keep the locomotives from breaking down. 199 00:13:59,640 --> 00:14:02,040 You're responsible for the train that the people are in 200 00:14:02,120 --> 00:14:04,960 so you've got to understand what you're doing, 201 00:14:05,120 --> 00:14:06,440 what can go wrong. 202 00:14:09,960 --> 00:14:11,720 NARRATOR: It's time to board the passengers 203 00:14:12,920 --> 00:14:17,360 and stoke the furnace which sits inside the train's boiler. 204 00:14:18,720 --> 00:14:22,840 The hot furnace turns the water surrounding it into high pressure steam. 205 00:14:24,480 --> 00:14:29,120 A pipe at the top of the boiler then diverts the steam to twin pistons 206 00:14:29,640 --> 00:14:31,960 which sit either side of the front wheels. 207 00:14:35,240 --> 00:14:39,080 As the pistons fill with steam, they drive the wheels forward. 208 00:14:54,280 --> 00:14:57,240 This line includes a half-kilometer long tunnel 209 00:14:58,160 --> 00:15:00,800 and the magnificent Hooks Hill viaduct, 210 00:15:01,400 --> 00:15:04,520 designed by world renowned British industrial engineer, 211 00:15:04,960 --> 00:15:06,680 Isambard Kingdom Brunel. 212 00:15:08,880 --> 00:15:11,760 Finally, Kingswear. 213 00:15:13,720 --> 00:15:16,600 A picturesque fishing village crammed with boats. 214 00:15:21,680 --> 00:15:25,120 The steam train has completed a full run with no problems 215 00:15:26,000 --> 00:15:29,400 and all its vintage parts have made it in one piece. 216 00:15:30,440 --> 00:15:32,560 For Ian, that's a triumph. 217 00:15:33,480 --> 00:15:36,520 Hopefully, I've done a good job and I can go and have a cup of tea. 218 00:15:36,600 --> 00:15:38,440 (laughs) 219 00:15:40,040 --> 00:15:43,280 NARRATOR: It's testament to Ian and his team's care and attention 220 00:15:43,800 --> 00:15:47,680 that this little part of British heritage is being kept alive 221 00:15:47,760 --> 00:15:49,880 for future generations to enjoy. 222 00:15:52,840 --> 00:15:56,720 As well as carving a railway network into the nation's countryside, 223 00:15:57,160 --> 00:16:01,800 Britain's pioneering industrial engineers built another transport legacy 224 00:16:01,880 --> 00:16:03,280 that lives on today. 225 00:16:07,960 --> 00:16:12,080 In July, the midsummer heat spreads across the UK. 226 00:16:12,480 --> 00:16:14,320 From the south coast of England 227 00:16:14,880 --> 00:16:19,200 to the United Kingdom's most northern country, Scotland. 228 00:16:20,880 --> 00:16:23,440 Here, hikers take to the highlands 229 00:16:23,520 --> 00:16:26,480 to explore some of the UK's tallest mountains 230 00:16:27,960 --> 00:16:31,120 as the summer thaw melts away the snowy peaks. 231 00:16:32,640 --> 00:16:36,080 In Scotland's south, the vibrant cities of Glasgow 232 00:16:36,800 --> 00:16:39,040 and the country's capital, Edinburgh, 233 00:16:39,120 --> 00:16:43,800 throng with tourists there to soak up the art and culture on offer. 234 00:16:46,480 --> 00:16:49,040 Those that want to escape the hustle and bustle 235 00:16:49,800 --> 00:16:53,360 take to the canals for a tranquil weekend on the water. 236 00:16:55,760 --> 00:16:58,400 The whole of the United Kingdom is crisscrossed 237 00:16:58,480 --> 00:17:02,000 with more than 3,000 kilometers of man-made waterways. 238 00:17:03,080 --> 00:17:06,920 Engineers built these canals in the 18th and 19th century 239 00:17:07,000 --> 00:17:09,320 to power the industrial revolution. 240 00:17:10,000 --> 00:17:11,880 Today, they're used for pleasure. 241 00:17:14,240 --> 00:17:18,960 Scotland has two major canals that run between Glasgow and Edinburgh. 242 00:17:19,960 --> 00:17:23,120 They meet in the middle, at a town called Falkirk. 243 00:17:24,640 --> 00:17:27,640 From above, the two canals appear to join as one. 244 00:17:30,880 --> 00:17:33,360 But a closer look reveals a problem. 245 00:17:34,360 --> 00:17:39,280 The undulating Scottish landscape means that there is a 35-meter vertical drop 246 00:17:39,440 --> 00:17:40,880 between the two canals. 247 00:17:42,080 --> 00:17:44,760 So how do you travel between two waterways 248 00:17:44,840 --> 00:17:46,560 on completely different levels? 249 00:17:48,360 --> 00:17:51,920 Inventive engineers devise an ingenious solution. 250 00:17:53,480 --> 00:17:56,200 The world's only rotating boat lift, 251 00:17:57,280 --> 00:17:58,960 the Falkirk Wheel. 252 00:18:01,840 --> 00:18:04,760 Before this machine was opened in 2002, 253 00:18:05,160 --> 00:18:08,200 it would take weary boaters a day's heavy work 254 00:18:08,280 --> 00:18:10,200 to travel between the two canals, 255 00:18:10,960 --> 00:18:14,600 opening and closing 44 lock gates along the way. 256 00:18:16,200 --> 00:18:21,360 Today, the Falkirk Wheel can transport barges up and down between the canals 257 00:18:21,800 --> 00:18:23,720 in just four and a half minutes. 258 00:18:26,320 --> 00:18:29,760 Peter Robinson is the head engineer for Scottish Canals. 259 00:18:30,920 --> 00:18:33,360 It's Peter's job to ensure the smooth running 260 00:18:33,520 --> 00:18:37,480 of this £17.5 million engineering marvel. 261 00:18:38,640 --> 00:18:39,720 For me to be responsible 262 00:18:39,800 --> 00:18:41,680 for trying to look after it is just superb. 263 00:18:41,760 --> 00:18:43,640 I think some days, I've got the best job in the world. 264 00:18:45,520 --> 00:18:48,880 NARRATOR: Today, Peter and his colleagues have seven hours 265 00:18:48,960 --> 00:18:51,800 to coordinate the movement of 25 boats 266 00:18:51,880 --> 00:18:53,880 up and down between the two canals. 267 00:18:56,560 --> 00:18:57,880 At each end of the waterway, 268 00:18:58,320 --> 00:19:00,760 the first boats of the day start to arrive. 269 00:19:05,080 --> 00:19:08,760 The skippers steer their barges into water tight gondolas 270 00:19:08,840 --> 00:19:10,240 at each end of the wheel. 271 00:19:14,200 --> 00:19:16,360 Peter's colleagues in the operation room 272 00:19:16,880 --> 00:19:18,760 close the hydraulic gates 273 00:19:20,400 --> 00:19:22,040 and set the wheel turning. 274 00:19:26,320 --> 00:19:30,960 Ten hydraulic motors work together to power an enormous gear 275 00:19:31,040 --> 00:19:32,960 that turns the central axle. 276 00:19:33,920 --> 00:19:37,560 This raises one of the 300-ton gondolas into the air 277 00:19:37,880 --> 00:19:39,480 while lowering the other. 278 00:19:40,560 --> 00:19:44,720 As the wheel rotates, each of the gondolas remains upright 279 00:19:44,800 --> 00:19:47,440 thanks to a simple series of giant cogs. 280 00:19:48,760 --> 00:19:50,880 ROBINSON: It's just phenomenal the number of people that are coming along 281 00:19:50,960 --> 00:19:53,480 and reliably we just bring them through. 282 00:19:53,560 --> 00:19:55,480 It's just engineering at its best. 283 00:19:57,040 --> 00:20:01,040 NARRATOR: In each turn, the engine only uses the same amount of energy 284 00:20:01,120 --> 00:20:02,960 as eight boiling kettles. 285 00:20:04,360 --> 00:20:06,320 For the wheel to run this efficiently 286 00:20:06,800 --> 00:20:11,520 the weight of the two gondolas needs to be exactly the same at all times. 287 00:20:13,560 --> 00:20:16,000 But luckily that's not as hard as it sounds, 288 00:20:16,400 --> 00:20:18,440 thanks to a handy quirk of physics. 289 00:20:20,560 --> 00:20:22,720 When a boat enters either gondola, 290 00:20:23,080 --> 00:20:26,320 it displaces its own weight in water exactly. 291 00:20:29,520 --> 00:20:33,440 This means the two ends of the lift remain in perfect balance 292 00:20:34,080 --> 00:20:36,960 whether they're empty or full of boats. 293 00:20:38,640 --> 00:20:40,440 ROBINSON: It's complex yet simple. 294 00:20:40,520 --> 00:20:42,120 Whatever goes in displaces water 295 00:20:42,200 --> 00:20:45,680 and therefore the two gondolas on the wheel remain balanced. 296 00:20:45,760 --> 00:20:50,320 It's absolutely brilliant to think about the engineering ingenuity. 297 00:20:53,520 --> 00:20:56,200 NARRATOR: The Falkirk Wheel's designers 298 00:20:56,280 --> 00:20:59,360 created a one of a kind engineering masterpiece 299 00:20:59,680 --> 00:21:03,640 to solve a unique problem with originality and style. 300 00:21:10,360 --> 00:21:13,600 As narrow boats make their way through the Scottish countryside, 301 00:21:14,480 --> 00:21:18,960 in the nearby fields malt barley farmers prepare their crops for harvest. 302 00:21:20,600 --> 00:21:24,840 This barley will go on to form one of Scotland's proudest creations. 303 00:21:29,520 --> 00:21:31,200 In Scotland's northeast, 304 00:21:33,280 --> 00:21:35,960 aerial cameras reveal countless little factories. 305 00:21:37,600 --> 00:21:38,600 What are they? 306 00:21:40,200 --> 00:21:44,000 A clue lies along one of the nation's longest waterways. 307 00:21:44,560 --> 00:21:46,440 The mighty River Spey. 308 00:21:47,520 --> 00:21:51,000 This river has more of these factories hidden in its bends 309 00:21:51,320 --> 00:21:53,040 than anywhere else in Scotland. 310 00:21:56,520 --> 00:21:59,960 These are Speyside's famous whiskey distilleries. 311 00:22:01,480 --> 00:22:05,040 They use the region's pure spring waters to make scotch. 312 00:22:07,160 --> 00:22:11,800 All this industry has given rise to a extraordinary aerial spectacle. 313 00:22:14,040 --> 00:22:18,800 A yard that stands like a Mayan temple in the heart of whiskey country. 314 00:22:23,440 --> 00:22:26,680 This is the Speyside Cooperage. 315 00:22:29,040 --> 00:22:33,720 It's home to around 150,000 empty whiskey barrels. 316 00:22:35,560 --> 00:22:39,120 Stacked into pyramids almost ten meters high. 317 00:22:42,640 --> 00:22:44,720 When the distilleries need more casks 318 00:22:45,320 --> 00:22:48,960 it's up to cooper, John Richard, to build and repair them. 319 00:22:49,760 --> 00:22:53,960 There's nothing quite like the pyramids that we have here at Speyside Cooperage. 320 00:22:54,040 --> 00:22:58,600 A lot of people say they resemble the ancient Egyptian pyramids. 321 00:23:00,240 --> 00:23:03,280 NARRATOR: Scotch begins life as a colorless liquid. 322 00:23:03,440 --> 00:23:06,560 Oak barrels give it its famous golden hue. 323 00:23:07,760 --> 00:23:09,760 And once those barrels are empty, 324 00:23:09,840 --> 00:23:14,200 the distilleries send them here to be stored and eventually refurbished. 325 00:23:17,480 --> 00:23:19,600 Today, one of the local distilleries 326 00:23:19,680 --> 00:23:23,360 has placed an order for 300 newly refurbished barrels. 327 00:23:27,440 --> 00:23:29,640 All the casks are repaired to order 328 00:23:30,080 --> 00:23:33,600 so they can be ready for shipment to the distillery that very same day. 329 00:23:37,880 --> 00:23:42,520 It's time for John to get to work on a 2,000-year-old tradition. 330 00:23:48,560 --> 00:23:53,520 Inside the Cooperage, John sets to work on the order with lightning speed. 331 00:23:54,520 --> 00:23:57,200 He checks the oak staves for imperfections 332 00:23:58,200 --> 00:24:02,720 and throws any rotten wood away, replacing it with a fresh strip. 333 00:24:02,800 --> 00:24:06,480 RICHARD: We'll check for any defects such as broken staves, 334 00:24:06,560 --> 00:24:09,200 rusty hoops, buckled ends. 335 00:24:09,640 --> 00:24:12,240 Experience tells us what to look for. 336 00:24:12,560 --> 00:24:16,320 NARRATOR: Once the barrels have been fixed and both ends have been removed, 337 00:24:16,840 --> 00:24:20,520 the coopers do something that at first glance seems crazy. 338 00:24:21,600 --> 00:24:24,840 They set each cask alight with a flame thrower. 339 00:24:25,880 --> 00:24:29,200 The coopers place the casks over a hole in the floor 340 00:24:29,920 --> 00:24:33,560 which fires out a 430 degree flame, 341 00:24:33,640 --> 00:24:36,840 blasting the inside of the barrel for up to four minutes. 342 00:24:38,720 --> 00:24:40,480 This is called charring, 343 00:24:41,800 --> 00:24:45,640 and it holds the secret to the malt whiskey's delicate flavor. 344 00:24:46,520 --> 00:24:49,360 RICHARD: The charring caramelizes the natural sugars 345 00:24:49,440 --> 00:24:50,960 that exist within the wood 346 00:24:51,040 --> 00:24:55,400 and this allows the alcohol to pick up flavors of honey and caramel. 347 00:24:59,200 --> 00:25:00,640 NARRATOR: In a single day, 348 00:25:00,760 --> 00:25:03,600 John and the team complete 300 barrels 349 00:25:04,240 --> 00:25:06,480 ready to be shipped out to the distillery. 350 00:25:07,880 --> 00:25:10,040 Each barrel will spend the next decade 351 00:25:10,120 --> 00:25:14,800 slowly turning a colorless spirit into an exclusive Scottish product. 352 00:25:15,680 --> 00:25:18,760 RICHARD: Speyside is the malt whiskey capital of the world. 353 00:25:19,600 --> 00:25:24,480 At the end of the day, when I roll my last cask out on to the lorry, 354 00:25:24,920 --> 00:25:27,360 it's great to know that I have contributed something 355 00:25:27,440 --> 00:25:29,440 that is so vital to the area. 356 00:25:36,440 --> 00:25:38,200 NARRATOR: As summer draws to a close, 357 00:25:38,840 --> 00:25:42,120 the temperature across the United Kingdom starts to cool. 358 00:25:44,400 --> 00:25:47,440 It's November and the days are getting shorter. 359 00:25:49,320 --> 00:25:52,200 The morning sun paints the sky a soft pink 360 00:25:52,920 --> 00:25:55,840 and a thick mist settles over the landscape. 361 00:25:58,080 --> 00:25:59,120 It's autumn, 362 00:25:59,640 --> 00:26:02,520 and in the north of England a chill in the air 363 00:26:02,880 --> 00:26:06,360 signals the start of one of the most dramatic feats in farming 364 00:26:07,680 --> 00:26:09,920 that heralds the coming of new life. 365 00:26:15,040 --> 00:26:16,680 In England's northwest, 366 00:26:17,200 --> 00:26:20,840 in the heart of Cumbria, sits the lake district. 367 00:26:21,320 --> 00:26:23,440 A vast craggy national park 368 00:26:24,000 --> 00:26:27,440 sculpted by glaciers over the last two million years. 369 00:26:29,480 --> 00:26:34,320 Looking closer, it's a patchwork of seemingly barren mountains. 370 00:26:39,320 --> 00:26:44,880 An aerial view reveals that this rugged landscape is farmland. 371 00:26:49,520 --> 00:26:54,360 Farmer, David Harrison, looks after 1,100 mountain dwelling sheep. 372 00:26:55,800 --> 00:26:58,120 It's a farming practice in this area 373 00:26:58,200 --> 00:27:00,600 thought to stretch back to Viking times. 374 00:27:01,520 --> 00:27:04,240 HARRISON: In the people round here it's bred in them. It's in the blood. 375 00:27:04,960 --> 00:27:08,760 Me family's been farming here for well over 100 years. 376 00:27:09,720 --> 00:27:12,440 I'm about the fourth, fifth generation. 377 00:27:18,920 --> 00:27:20,800 NARRATOR: David needs to bring his sheep 378 00:27:20,880 --> 00:27:22,640 back to the homestead for breeding. 379 00:27:24,160 --> 00:27:26,320 His problem is finding them. 380 00:27:30,640 --> 00:27:32,400 The sheep live semi-wild. 381 00:27:34,200 --> 00:27:37,280 Spread out across 3,000 mountainous acres. 382 00:27:42,040 --> 00:27:45,800 David's solution is to start at the top of the mountain 383 00:27:46,560 --> 00:27:47,880 with his team of dogs 384 00:27:49,000 --> 00:27:50,480 and work his way down. 385 00:27:51,960 --> 00:27:53,520 HARRISON: I've done it that many times. 386 00:27:53,600 --> 00:27:55,560 You know the fell like the back of your hand. 387 00:27:57,120 --> 00:27:58,600 I know where my sheep are. 388 00:28:02,440 --> 00:28:05,400 NARRATOR: The further David and his dogs move down the mountain, 389 00:28:05,720 --> 00:28:07,600 the larger the flock becomes, 390 00:28:09,000 --> 00:28:11,720 as he picks up more and more sheep along the way. 391 00:28:15,320 --> 00:28:18,320 HARRISON: It's gonna take us about four to five hours 392 00:28:18,400 --> 00:28:20,800 to get all the sheep back in off that fell. 393 00:28:22,800 --> 00:28:27,560 Lose a bit of sweat on the way and sore feet, but we'll get it done. 394 00:28:31,360 --> 00:28:33,600 NARRATOR: By the time they reach the lowlands, 395 00:28:33,680 --> 00:28:35,520 the giant flock is complete. 396 00:28:38,160 --> 00:28:40,880 From above, it's an incredible sight. 397 00:28:42,360 --> 00:28:45,400 A thousand sheep squeeze through the narrow gate, 398 00:28:46,600 --> 00:28:48,600 herded by David's dogs 399 00:28:48,680 --> 00:28:50,640 like sand through an hour glass. 400 00:28:56,960 --> 00:28:57,880 HARRISON: Dogs are marvelous. 401 00:28:57,960 --> 00:29:01,800 I can put a dog up to a mile away from where I'm stood 402 00:29:01,880 --> 00:29:06,120 to bring sheep back to me or send them in the right direction where I want to go. 403 00:29:08,080 --> 00:29:09,200 They're invaluable. 404 00:29:09,280 --> 00:29:10,560 You couldn't do it without them. 405 00:29:17,480 --> 00:29:19,640 NARRATOR: A shepherd taking around 100 sheep 406 00:29:19,720 --> 00:29:23,360 from one field to the next only needs a single sheepdog. 407 00:29:24,640 --> 00:29:27,720 When you're collecting 1,000 sheep from a mountain, 408 00:29:27,880 --> 00:29:31,120 the flock is so spread out, you need more than ten. 409 00:29:33,360 --> 00:29:36,680 HARRISON: When one splits off, you have a good eye dog that'll fetch it, 410 00:29:36,760 --> 00:29:38,000 guide it back into the flock 411 00:29:38,080 --> 00:29:40,480 and you just stand still and let the dog do its work. 412 00:29:45,560 --> 00:29:47,360 NARRATOR: It takes them till early afternoon 413 00:29:47,440 --> 00:29:50,320 for David and his team to finally herd all the sheep 414 00:29:50,400 --> 00:29:51,880 into the pen for breeding. 415 00:29:53,200 --> 00:29:56,280 HARRISON: The gather that we've just done was absolutely fantastic. 416 00:29:56,360 --> 00:29:59,680 It was their best gather we've had on that fell this year. 417 00:30:00,200 --> 00:30:01,680 It was just brilliant. 418 00:30:03,520 --> 00:30:05,080 NARRATOR: In just a few months, 419 00:30:05,160 --> 00:30:08,440 David's flock will give birth to the next generation. 420 00:30:10,360 --> 00:30:11,320 HARRISON: I love being on the fell. 421 00:30:11,400 --> 00:30:13,680 Gathering the fell's me favorite job. 422 00:30:13,760 --> 00:30:17,000 You can't beat it being out on your own with your dogs. 423 00:30:18,920 --> 00:30:22,720 I don't think I'm, eh, cut out to do any other job. 424 00:30:22,800 --> 00:30:25,840 Um, I'm unemployable I think. (laughs) 425 00:30:25,920 --> 00:30:27,320 I'll have to stay doing this. 426 00:30:34,920 --> 00:30:38,600 NARRATOR: As autumn's damp wet weather takes hold across the UK, 427 00:30:39,040 --> 00:30:41,840 people dream of jetting off to warmer climes. 428 00:30:42,520 --> 00:30:45,680 A cutting edge engineering workshop in the middle of England 429 00:30:46,120 --> 00:30:48,520 makes those dreams a reality. 430 00:30:53,800 --> 00:30:58,000 The Midlands are historically the industrial heartland of England. 431 00:30:58,640 --> 00:31:02,760 Birmingham, Coventry, and Derby were key cities 432 00:31:02,840 --> 00:31:04,480 in the industrial revolution. 433 00:31:05,600 --> 00:31:09,200 Even today, the area around Derby still houses 434 00:31:09,280 --> 00:31:13,760 some of the most advanced transport manufacturing workshops in existence. 435 00:31:16,520 --> 00:31:20,760 This colossal concrete structure is the Rolls-Royce test facility. 436 00:31:22,040 --> 00:31:26,320 It's here that every jet engine produced in the neighboring assemble line 437 00:31:26,400 --> 00:31:28,440 is certified fit for service. 438 00:31:31,040 --> 00:31:33,520 Chris Pattinson is the man in charge. 439 00:31:35,160 --> 00:31:38,520 It's his job to make sure our planes can fly safely. 440 00:31:40,280 --> 00:31:42,880 PATTINSON: If we didn't have the ability to test engines, quite simply, 441 00:31:43,240 --> 00:31:45,040 you and I couldn't go on holiday. 442 00:31:45,840 --> 00:31:48,320 This is a facility that runs 24 hours a day. 443 00:31:48,680 --> 00:31:52,680 It runs almost seven days a week and it runs almost 365 days a year. 444 00:31:54,600 --> 00:31:57,080 NARRATOR: Each multi-million-pound jet engine 445 00:31:57,160 --> 00:31:59,600 consists of 30,000 components, 446 00:32:00,040 --> 00:32:02,480 but as our airborne journey reveals, 447 00:32:02,800 --> 00:32:06,480 the building itself is a modern engineering wonder. 448 00:32:08,200 --> 00:32:12,320 One room in particular is vital for keeping the four billion passengers 449 00:32:12,480 --> 00:32:14,920 who travel by air each year, safe. 450 00:32:17,600 --> 00:32:20,280 This is the Rolls-Royce test bed. 451 00:32:21,440 --> 00:32:24,760 PATTINSON: I remember my first time here and what got me was the scale. 452 00:32:25,560 --> 00:32:27,640 What we do here is absolutely exceptional. 453 00:32:28,640 --> 00:32:30,400 NARRATOR: Here, Chris and his team 454 00:32:30,480 --> 00:32:34,720 fire up the 50,000 horsepower jet engines to full throttle. 455 00:32:36,840 --> 00:32:40,240 They do this for every engine the company builds in the UK. 456 00:32:41,280 --> 00:32:44,840 The only way to truly understand how remarkable this room is, 457 00:32:45,920 --> 00:32:48,920 is to see it from the sky above the building. 458 00:32:51,560 --> 00:32:54,520 A colossal fan in the tower on the right of the building 459 00:32:55,120 --> 00:32:58,760 sucks in 1.3 tons of air per second. 460 00:32:59,560 --> 00:33:04,120 The air passes through the engine at almost 1,600 kilometers per hour 461 00:33:05,280 --> 00:33:09,400 before being expelled from the building through an enormous chimney on the left. 462 00:33:11,200 --> 00:33:14,720 This super-sized vent system means that Rolls-Royce 463 00:33:14,800 --> 00:33:17,800 can rigorously test every jet engine it builds 464 00:33:18,400 --> 00:33:21,280 under the extreme conditions the jet could face 465 00:33:21,360 --> 00:33:23,520 at 10,000 meters altitude, 466 00:33:24,640 --> 00:33:26,920 without ever needing to leave the factory. 467 00:33:29,640 --> 00:33:31,480 The team start the engine. 468 00:33:32,560 --> 00:33:36,600 They want to replicate the effect of flying through an enormous rainstorm 469 00:33:37,240 --> 00:33:40,880 to see if the engine can withstand over ten liters of water 470 00:33:40,960 --> 00:33:43,000 spraying through every second. 471 00:33:44,120 --> 00:33:46,360 The forces involved are huge. 472 00:33:46,960 --> 00:33:51,560 Each engine produces more thrust than 68 Formula One cars. 473 00:33:56,160 --> 00:33:57,440 The test is over. 474 00:33:57,880 --> 00:34:00,040 The team carefully inspects the engine 475 00:34:00,120 --> 00:34:03,160 to see how it coped with the extreme forces 476 00:34:04,200 --> 00:34:06,400 and it's passed with flying colors. 477 00:34:07,080 --> 00:34:09,360 PATTINSON: The technology that we deal with is exceptional. 478 00:34:10,720 --> 00:34:12,320 The facilities are exceptional. 479 00:34:13,520 --> 00:34:15,680 I absolutely love it and I wouldn't do anything else. 480 00:34:20,120 --> 00:34:22,200 NARRATOR: As autumn in the Midlands fades, 481 00:34:24,240 --> 00:34:26,840 a cold chill descends upon the UK 482 00:34:27,720 --> 00:34:31,320 and a dusting of frost covers all corners of the nation. 483 00:34:34,680 --> 00:34:38,800 It's December and winter has arrived in the British Isles. 484 00:34:41,200 --> 00:34:44,640 Icy coastal winds bring freezing temperatures. 485 00:34:46,920 --> 00:34:49,080 But in the heart of the Cornish countryside, 486 00:34:50,120 --> 00:34:52,600 groundbreaking British designers have found a way 487 00:34:52,680 --> 00:34:54,440 to defeat the winter blues 488 00:34:55,560 --> 00:34:59,480 by engineering a tropical climate all year round. 489 00:35:04,280 --> 00:35:06,360 On England's southern-most tip, 490 00:35:06,800 --> 00:35:09,840 nestled in amongst the rugged Cornish coastline, 491 00:35:11,240 --> 00:35:15,160 is the last place on Earth you would expect to find a tropical paradise, 492 00:35:15,800 --> 00:35:17,200 but zoom in closer, 493 00:35:17,960 --> 00:35:22,200 an aerial view reveals a building straight out of science fiction. 494 00:35:26,000 --> 00:35:28,680 This is the Eden Project. 495 00:35:30,400 --> 00:35:33,320 The world's biggest indoor rainforest. 496 00:35:35,400 --> 00:35:38,040 This incredible engineering masterpiece 497 00:35:38,120 --> 00:35:41,440 is a series of eight interlocking transparent domes 498 00:35:41,760 --> 00:35:43,800 etched into the Cornish countryside. 499 00:35:49,920 --> 00:35:55,880 It's 7:00 a.m. and for daredevil gardener, David Paul, it's time to get to work. 500 00:35:55,960 --> 00:35:59,240 This is the biggest captivity rainforest in the world. 501 00:35:59,920 --> 00:36:02,240 It's such an exciting opportunity to be able to work 502 00:36:02,320 --> 00:36:04,600 with these different trees that you'd never be able to work with. 503 00:36:06,080 --> 00:36:08,960 NARRATOR: Designers created the Eden Project 504 00:36:09,040 --> 00:36:13,480 to house and celebrate plant species from rainforests across the globe. 505 00:36:14,680 --> 00:36:17,800 It's home to nearly two million different plants 506 00:36:18,200 --> 00:36:21,200 that span three of the world's climate zones. 507 00:36:22,160 --> 00:36:25,800 A specially designed irrigation system captures rainfall 508 00:36:26,160 --> 00:36:28,760 which is recycled to water the plants, 509 00:36:29,080 --> 00:36:30,880 feed the ten-meter waterfall 510 00:36:31,240 --> 00:36:33,080 and add to the dome's humidity. 511 00:36:35,520 --> 00:36:36,760 But there's a problem. 512 00:36:38,440 --> 00:36:40,480 The tropical conditions are so good 513 00:36:40,880 --> 00:36:42,520 the plants inside the domes 514 00:36:42,600 --> 00:36:45,160 grow just as fast as they would in the wild. 515 00:36:46,600 --> 00:36:50,280 If left unchecked, this could cause a serious issue. 516 00:36:51,160 --> 00:36:53,560 The trees could penetrate the dome itself 517 00:36:53,680 --> 00:36:55,200 and then once that is open to the elements, 518 00:36:55,360 --> 00:36:57,520 all the other trees would potentially die. 519 00:37:03,800 --> 00:37:07,120 NARRATOR: The Eden Project's canopy is growing so quickly 520 00:37:07,200 --> 00:37:09,920 it's close to bursting through the greenhouse roof. 521 00:37:11,040 --> 00:37:12,280 If that were to happen, 522 00:37:12,680 --> 00:37:15,320 all the species that this habitat protects 523 00:37:15,400 --> 00:37:16,480 would be at risk. 524 00:37:18,560 --> 00:37:21,680 Today, David and the team have just three hours 525 00:37:21,760 --> 00:37:24,880 to trim the branches before the morning rush of visitors. 526 00:37:27,240 --> 00:37:30,160 The rope crew haul their way to the top of the structure. 527 00:37:32,200 --> 00:37:35,560 It's the dome's geodesic design that holds the secret 528 00:37:35,640 --> 00:37:38,240 to the Eden Project's phenomenal success. 529 00:37:41,480 --> 00:37:45,560 More than 800 different plastic sheets make up the structure. 530 00:37:46,920 --> 00:37:50,120 An ultra light steel frame holds them together 531 00:37:51,040 --> 00:37:53,440 to create the perfectly rounded domes. 532 00:37:56,920 --> 00:38:01,040 This giant bubble wrapped shell lets in as much light as possible, 533 00:38:03,800 --> 00:38:05,760 while insulating the rainforest 534 00:38:06,600 --> 00:38:10,760 to between 18 and 38 degrees Celsius all year round. 535 00:38:12,640 --> 00:38:15,520 Working in these temperatures takes some skill. 536 00:38:16,960 --> 00:38:19,280 Especially when maneuvering a chainsaw. 537 00:38:22,480 --> 00:38:24,720 PAUL: It is challenging working in here in the heat. 538 00:38:25,120 --> 00:38:27,880 The metal work can get so hot in here that you can cook an egg on it. 539 00:38:30,320 --> 00:38:31,280 -(man yells indistinctly) -Okay. 540 00:38:31,360 --> 00:38:32,480 Okay. Below! 541 00:38:35,200 --> 00:38:37,240 NARRATOR: The rope team trim the branches 542 00:38:37,320 --> 00:38:39,320 and glide back down to ground level. 543 00:38:40,440 --> 00:38:41,880 It's a job well done. 544 00:38:45,520 --> 00:38:49,160 Over a million people visit the Eden Project each year 545 00:38:49,240 --> 00:38:51,800 to marvel at its botanical wonders 546 00:38:51,880 --> 00:38:55,080 as well as the incredible structure that houses them. 547 00:39:01,000 --> 00:39:03,280 At the opposite end of the United Kingdom, 548 00:39:04,000 --> 00:39:07,320 the January weather paints Scotland white with snow. 549 00:39:09,160 --> 00:39:10,800 In the east of the country, 550 00:39:10,880 --> 00:39:13,680 Scottish engineers have used the natural landscape 551 00:39:14,280 --> 00:39:16,000 to create a surprising home 552 00:39:16,760 --> 00:39:18,880 for some of the biggest machines on Earth. 553 00:39:23,120 --> 00:39:28,520 Scotland's east coast is a land of narrow sea inlets called firths. 554 00:39:30,200 --> 00:39:34,120 Glaciers carved these deep bays during the last ice age. 555 00:39:37,640 --> 00:39:39,960 Just 30 kilometers north of Inverness, 556 00:39:40,680 --> 00:39:42,160 sits Cromarty Firth. 557 00:39:45,040 --> 00:39:48,640 It appears to be dotted with strange industrial structures. 558 00:39:50,680 --> 00:39:51,560 What are they? 559 00:39:53,720 --> 00:39:56,600 A closer look reveals the surprising truth. 560 00:39:57,760 --> 00:40:01,920 This is an enormous repair yard for oil rigs. 561 00:40:03,800 --> 00:40:07,200 The North Sea is filled with over 600 of these giants 562 00:40:08,240 --> 00:40:10,240 but when the rigs need repairs, 563 00:40:10,320 --> 00:40:13,280 they're towed here to the shelter of the firth. 564 00:40:16,000 --> 00:40:18,560 Calum Slater is in charge of the port. 565 00:40:20,280 --> 00:40:22,000 It's his job to make sure 566 00:40:22,080 --> 00:40:25,280 these rigs are hauled through Cromarty Firth's waterways 567 00:40:25,680 --> 00:40:27,720 to the waiting engineering companies 568 00:40:27,800 --> 00:40:29,920 without running aground on the rocks. 569 00:40:31,040 --> 00:40:32,080 Every job that we do, 570 00:40:32,600 --> 00:40:35,480 we carry the responsibility for this stretch of water. 571 00:40:35,560 --> 00:40:38,200 We always want to be sure things are going to plan. 572 00:40:41,920 --> 00:40:43,400 NARRATOR: Calum's task today 573 00:40:43,760 --> 00:40:48,040 is to move an enormous oil rig from the mouth of the firth into dock. 574 00:40:50,600 --> 00:40:54,200 The monster machine is worth around £40 million. 575 00:40:56,720 --> 00:40:59,160 To tow the massive oil rig into harbor, 576 00:40:59,840 --> 00:41:04,000 Calum doesn't just use one giant tug, he uses two. 577 00:41:06,360 --> 00:41:10,600 Rigs float thanks to giant buoyancy aids called pontoons 578 00:41:11,200 --> 00:41:14,040 which lie just below the water's surface. 579 00:41:16,640 --> 00:41:18,000 But when they're being moved, 580 00:41:18,440 --> 00:41:23,080 these same pontoons drag in the water, making the rigs less stable. 581 00:41:24,640 --> 00:41:27,240 So while one ship pulls the rig forwards, 582 00:41:28,040 --> 00:41:32,600 the other tugs in the opposite direction to help keep the rig upright. 583 00:41:34,240 --> 00:41:38,360 Each towing vessel has a 28,000 horsepower engine 584 00:41:39,240 --> 00:41:41,960 and is almost as long as the Statue of Liberty. 585 00:41:46,360 --> 00:41:48,920 SLATER: Rig moves can take anywhere between eight 586 00:41:49,000 --> 00:41:52,200 to 17, 18, 19 hours in--in duration. 587 00:41:53,840 --> 00:41:56,840 NARRATOR: Progress is painfully slow. 588 00:41:57,680 --> 00:41:59,840 The rig barely seems to move. 589 00:42:01,680 --> 00:42:02,880 But over the next hour, 590 00:42:02,960 --> 00:42:05,440 the rig creeps forward nine kilometers 591 00:42:05,760 --> 00:42:07,480 to reach its final goal, 592 00:42:08,680 --> 00:42:11,640 the docking site at the port in Invergordon. 593 00:42:17,360 --> 00:42:18,960 The rig is 90 meters long 594 00:42:19,320 --> 00:42:21,320 and 76 meters wide. 595 00:42:23,400 --> 00:42:25,880 But it needs to squeeze into this space 596 00:42:26,560 --> 00:42:28,920 less than 150 meters across. 597 00:42:31,360 --> 00:42:34,800 The space is too narrow for the colossal towing vessels 598 00:42:34,880 --> 00:42:36,600 that brought the rig into the firth. 599 00:42:38,760 --> 00:42:42,680 So smaller more maneuverable harbor tug boats take over. 600 00:42:49,240 --> 00:42:53,040 Meter by meter, the tug boats carefully tow the rig 601 00:42:53,520 --> 00:42:54,760 into the docking site 602 00:42:59,520 --> 00:43:03,680 and align it with the side of the jetty so the rig is parallel. 603 00:43:09,280 --> 00:43:10,320 It's dusk 604 00:43:10,800 --> 00:43:13,760 and the team have successfully landed the rig in the dock. 605 00:43:14,640 --> 00:43:18,920 The crew on board have made it home in time for a well-earned break. 606 00:43:19,360 --> 00:43:23,000 SLATER: At the end of the day, we're glad that it's done safely. 607 00:43:24,160 --> 00:43:26,120 NARRATOR: The port's engineering companies 608 00:43:26,200 --> 00:43:29,840 will spend the next few months giving the rig a full service. 609 00:43:30,480 --> 00:43:31,760 When they're finished, 610 00:43:31,840 --> 00:43:35,800 this colossal machine will head back out to the North Sea 611 00:43:35,880 --> 00:43:38,400 in search of black gold once more. 612 00:43:42,360 --> 00:43:44,600 The UK is an island nation 613 00:43:45,400 --> 00:43:47,800 with a thirst for engineering innovation 614 00:43:49,160 --> 00:43:52,040 that has left a permanent mark on the world's stage. 615 00:43:53,560 --> 00:43:57,480 It has a rich cultural history that spans many different regions. 616 00:43:59,240 --> 00:44:02,920 They all retain their own unique stamp of individuality 617 00:44:03,760 --> 00:44:07,600 but come together as one united kingdom. 56744

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