World’s Most Extreme Railway | Megastructures | Free Documentary

[Music] this is the story of the battle to build a railroad across one of the most extreme environments on earth to lay over a thousand kilometers of track in a remote wilderness to drive seven tunnels through the rugged slopes to raise 675 bridges over valleys and rivers all at an altitude where even a simple bread is nearly impossible to come by this is a tough place to work headaches shortness of breath freezing winds 140,000 workers and 2,000 medics who struggled for five years to conquer this hostile environment and to complete the Ching hai Tibet railway the highest most extreme railway in the world [Music] [Applause] Beijing West the largest station in Asia and one of the busiest 400000 can pass through here in a single day coming through with today's craft it's Finnish engineer Pasi lauter he's here to see for himself just how one of the most extraordinary railways on the planet was built the line to lesser inter Burt because so high and of course for such a long distance or were really really rough terrains so I don't think anything like that has been ever done on the railway engineering world this is no ordinary rail journey the Lhasa Express is a multibillion-dollar marvel specially built to survive at altitudes higher than the Swiss Alps and at freezing temperatures the train obsessed posse it's a journey he's dreamed about for years I've read about it I know I've seen some of the engineering solutions they used to build the track and I got to see it it's nine-thirty and the Lasser Express is under way this is it it's time to go as director of rail transportation at Michigan Tech University Pasi is here on business we are doing some work connecting Alaskan rail network with Canadian rail network and as part of that project we've been studying some of the coal reaches railroads around the world to see how some of the other countries and some of the other regions have built them so it's a it's a learning learning experience for me from Beijing the Lhasa Express will travel 3,000 kilometers across China to the town of got mood from there the train will climb up to the Tibetan Plateau and across the roof of the world to Lhasa it's a marathon 47 hour journey but it's the final high altitude section of the line that interests posse it crosses lund higher than any mountain in the American Rockies an environment so hostile that it's like building a railway on Mars and it took Chinese engineers 50 years to work out how to do it the idea to build this controversial railway dates back to the 1950s when the Chinese army occupied Tibet in 1950 they wanted a railway to supply the troops but to build a railway first they needed a road the Chinese government through a vast labor force equipped with basic tools against the harsh conditions of the Tibetan Plateau but around 3,000 workers died from exposure and from altitude sickness it was a disaster and although the dream of the railway to debate lived on the plans were eventually shelved today the Lasser express pounds its way across industrial eastern China at over 110 kilometers per hour it's the pride of the Chinese railways and only the best get to work on it yang Jing Jing is the train master he's responsible for everything that happens on board especially safety thereupon I need to ensure the train has a safe journey from Beijing all the way to last line or gg a lot he begins the day with the briefing for some of the 36 staff who look after the passengers the 13 passenger carriages of the Lasser Express are divided into three types - so-called soft sleepers are the Chinese equivalent of first-class well this is definitely quite a luxurious way of traveling this compartment is called the soft sleeper there's four berths for four people and we even have a entertainment system with some Chinese TV or movies but it's not as luxurious for everybody in the Train seven carriages offer hard sleeper accommodation a bit more of a squeeze with six people to a room and four carriages are simply fitted with seats there are over 900 people on board who need to be fed for two days and nights that's the responsibility of Zhang Yang and his four chefs the most difficult part is that we have people from different ethnic backgrounds along the length of the railway everyone has different tastes Tibetans the way ethnic people and other minorities all have different tastes this makes life very difficult and the train has plenty of hot water for those who like to make their own whole cuisine [Music] it may look like a normal train but later in the journey the lives of everyone on board will depend on the hidden high-tech features of its carriages they've been specifically built to cope with the conditions on the Tibetan Plateau when you take a look at these trains they look just like regular Chinese trains there's nothing extraordinary except I see this one here it is an oxygen outlet that you can get some extra oxygen in the high altitudes of the Train [Music] each carriage is fitted with an oxygen generating unit that will come into operation at high altitude it's a small portent of what lies ahead [Music] throughout the day the train heads worst stopping for safety checks and to pick up passengers Lhasa is still 24 hours away but already there are signs of Tibetan culture as new passengers settle in for the night the train is already climbing by the time it reaches goal moon the last stop before the Tibetan Plateau it will be 2,800 meters above sea level by 3:00 a.m. most of the passengers are fast asleep but passing out Allah is wide awake this is quite exciting moment to me in a few minutes we are going to be reaching goal mode which is the last station before the drain clogs up to Tibbett blotto since I want to see that how they built the track this is the end of line for me it's time to get off to find out how Chinese engineers conquered the plateau Pasi needs to see the line close up and in daylight it's here that the engineering challenge really begins the remaining passengers are about to embark on a steep 2,000 meter climb and that means an engine change to a local with serious power at very high altitudes a conventional diesel can't cope with the low oxygen levels so bring on a pair of nj2 locos [Music] 138 ton diesel electric monsters with a combined output of 8,000 horsepower immediately behind the engine they've added an electricity generator car this will be the trains life-support system supplying power heat and most important of all oxygen for the passengers and crew the train is about to embark on an extreme journey that is only possible thanks to some radical engineering and a controversial political decision by 1984 the Chinese railway system had reached goal mood but Herod stomped for the next 16 years the unique problems of constructing a railway at very high altitude blocked its progress to Lhasa [Music] then in 1999 the Chinese government announced that it wanted to extend its railway network to the poor undeveloped regions of Western China and intertube and it argued that the railway would bring prosperity to the province and raised the standard of living its critics claim that the line was intended to tighten political control over Tibet and that it would enable large numbers of Han Chinese to move here over running the culture of local Tibetans whatever the truth China's engineers had their work cut out to deliver on this bold plan 50 kilometers outside gold mood Pasi law Allah begins his mission to find out how Chinese engineers solved the first challenge of this extreme terrain to reach the plateau they first had to cross the formidable peaks of the key unlock mountains the old Tibetan highway runs close to the new railway giving Pasi the chance to drive the route well when you see these cold mountains with the snowy tops it's no longer surprised it took 50 years to build this railway line up here quite magnificent cars and lorries can cope with steep climbs but heavy trains need a slow gradual ascent what engineers call a steady gradient well they chosen this route because this cause kind of between the mountaintops they are following the valley between and that's the easiest way to maintain the smooth gradient but going straight up the valley is out of the question the gradient is too steep so the railway must zigzag up it crossing time and time again with literally dozens of bridges two-thirds of the way up the valley the engineer's faced an enormous challenge building the sancho bridge the tallest bridge on the whole route right here we are crossing the river valley so we have to maintain the railway up in the air so that we can keep the smooth gradient it's a critical structure that had to be completed quickly so they could get supplies up to the plateau by rail to build the rest of the railway and that meant working through the winter by throwing an army of workers at the job and keeping the concrete warm when temperatures plunge to minus 20 they managed to construct the bridge in just 12 months the deadline was mad wow this is fantastic I'm quite happy I got off the train and I can't even imagine how it was to build this bridge over the winter time just amazing but this was just the beginning as Pasi heads over the Keeneland mountains up to the cold thin air of the Tibetan Plateau he's about to discover an extraordinary natural phenomenon that destroys towns [Music] after crossing the Kunlun mountains day breaks for the passengers on board the t27 train from Beijing to Lhasa it brings with it spectacular views of the Tibetan Plateau I had dreamed to come to Taipei for many years and see the scenery from conduct many books and and the signal is far more better than what we imagined and from the pool actually yeah so it's this really great this incredible area is so vast and cold it's been called the third pole it stretches over two and a half million square kilometres a quarter of the area of China winter temperatures plunge to minus 35 degrees Celsius and the entire area is higher than the Matterhorn for railway engineers like Patti La Jolla this is about as tough as it gets if I was asked to build a railway all these Mounties out probably run away I don't think you can find much more of a challenge than doing something like that [Applause] actually you can because below the flat surface of the plateau lies a substance that for 50 years defeated all attempts to build a railway frozen earth permafrost well the poor frost can have depth of few meters or all the way up to like 50 or 60 meters and most of the permafrost stays frozen year around the problem is not the permanent permafrost deep in the ground but a layer of soil and water above it the active layer that freezes in winter and thoughts in summer in winter the ground is frozen solid but if I was here in the summertime it would be like walking on a bark or a swamp the effects of the winter freeze can easily be demonstrated it's getting quite chilly here so we're going to have a little experiment I have a full bottle of water and I'm going to leave it here we'll come back and see what's happened to it [Applause] and here is the result of our experiment as water freezes it expands by about 9% now this landscape is full of water which behaves the same way as the water in the bottle over decades the ground hair can shift several metres it's a problem that the locals have struggled with for centuries as Pasi finds out on his first stop on the plateau the small town of Wu Dalian where the locals have been having a bit of a problem with their foundations many of the buildings in this town so damaged from permafrost was the ground gets moving from freezing and thawing almost nothing can stop it as the ground rises and falls it's pulling the town to pieces I mean take a look at these cracks in this building this is a great example of what pearl frost can do in the building's tougher buildings the movement of the permafrost makes it impossible to build a railway as the builders of this line in Alaska and these lines in Canada found out the hard way so Chinese engineers were expected to somehow solve the unsolvable this nightmare problem landed on the desk of cold region scientist wall dong Jen who quickly ruled out the obvious conventional solution the problem with this idea is that it involves a tremendous amount of work you have to dig out all the foundation soil remove all the ice and finally fill it with rocks over half the planned route across the Tibetan Plateau crossed permafrost 632 kilometers in all building deep foundations into the permafrost on such a vast scale was just too much labor and too much cost even for the Chinese then came a revelation the solution had been staring Chang in the face right here on the plateau the locals had figured out that the biggest problem for their houses was that the heat inside melted the ground below causing subsidence their solution was to build their houses on stilts or put pipes between the building and the ground to allow air to flow through Jeng realized that this kept the ground below the houses frozen it was a Eureka moment if he could keep the ground below the railway frozen then it wouldn't subside I think the most important issue regarding the railway is the idea that we must change from maintaining the temperature to reducing the temperature is essential to try out this idea in the 1970s Chang's team built a research station upon the plateau at Bay UWE they built a test section of the railway embankment and started to experiment so here we have ventilation ducts we just test hollow pipes that run through the embankment in the winter they allow cold air and wind to go through the embankment removing heat from it over time something amazing happened year by year the ground below got colder over several years they reduced the average temperature of the ground by two to three degrees just enough to keep it frozen but to build a whole railway line six hundred kilometers long with concrete tubes running through it would still be too expensive Chang's cheap idea wasn't cheap enough but he didn't give up after years surveying the plateau he noticed that something strange was happening beneath piles of small rocks those up the reports showed the temperature under the rocks was lower than other areas could this point the way to an even cheaper solution than the tubes a report from a remote part of Eastern Kazakhstan confirmed his suspicions archeologists had discovered ancient tombs made from piles of small rocks they noticed that the ground away from the tombs was soft and boggy but under each tomb it was frozen and had remained frozen for thousands of years preserving the artifacts below somehow these rocks were cooling the ground back at the Research Station Cheng decided to see if an embankment built of small rocks could do the same for a railway the purpose of these crushed rocks is to remove heat from the embankment and from the crown below so when they are built they make sure there's no fine material between the rocks leaving as much space for the air to circulate as possible over just 14 months Chang's experimental Rock embankment lowered the average temperature of the ground by 3 degrees Celsius and he found out how it worked in winter cold strong winds blew through the rocks pulling heat out of the ground while in the summer the rocks shaded the embankment from the heat of the Sun after 50 years of frustration Chinese scientists had stumbled onto a two thousand-year-old solution to the permafrost problem that was about as low tech as it gets this can be almost a 1 meter thick layer that goes down the embankment then down to the other side and up again making almost like a u-shape at last Chinese engineers could start building the railway in 2001 thousands of workers converged on the plateau and work began building the huge embankments using local materials and basic machinery by 2002 construction crews were rolling out the railway line at an incredible pace thanks to another very clever but simple idea the pg13 locomotive which lays its own rails as it advances it makes building a track almost as easy as assembling a model train set by mid 2003 the workers had laid over 250 kilometers of track from goal mood up onto the Tibetan Plateau and were making good progress towards Lhasa but the battle with the permafrost was far from over well in some of the areas the permafrost is very warm so that there rocks by themselves could not solve the problem and in those cases they would have to look into alternative solutions in some sections of the rig the summer temperatures were just a little too warm the embankments needed a little extra help to keep the ground frozen an ingenious device was found that was once again very low-tech harness nature and required no power these bizarre looking tubes are called thermal siphons the idea behind this is ingenious but really quite simple if you have ever licked the back of your hand and blown on it your skin feels cool that is because the water is evaporating and that removes heat from your skin these work in a similar manner up to 10 metres long with 5 metres buried into the ground the thermo siphons contain ammonia a refrigerating liquid however unlike a fridge a thermo siphon doesn't need an electricity supply to work inside the tube the liquid ammonia behaves a bit like the water on your skin it absorbs heat from the ground which causes it to boil and evaporate into a gas the gas rises in the tube taking the heat from the ground with it at the top cold wind cools the tube and the ammonia gives up its heat to the air outside and condenses back into a liquid which runs to the bottom of the tube and the cycle repeats itself simple low-tech genius 34 kilometers of track are cooled this way but even thermal siphons were incapable of protecting the most vulnerable sections of permafrost patsy heads to an area called ching su almost a quarter of the way across the plateau to explore the most fragile area of permafrost on the whole route here the active layer of permafrost melt during the summer and it turns into a treacherous bog that can behave almost like a quicksand if it turns into that kind of quicksand you can't bring anything on top of it everything would just sink into it immediately the ground here gets too warm in summer even for thermosyphons tikkun if the engineers couldn't find a way across the shifting Marsh there would be no railway our engineers recognized that at most difficult locations cross trucks and thermos ovens were not enough to have long lasting railway so they decided to build structures or try pretties at these locations now this was more expensive but they believed it was the right way to go the answer they believed was to treat the bog as if it was water and build bridges along the route teams of workers drilled thousands of holes deep into the permafrost by drilling through the active layer and down into the ice below that stayed frozen year-round they could build on solid foundations at least that was the theory because they now faced a new nightmare and again it was all about temperature the concrete poured into the ground to make the piers of the bridges could destroy the very foundations they were building on when you mix the concrete he goes through a chemical reaction as it sets it gives out heat in this experiment the temperature of the mix steadily increases when all your work is aimed at keeping the permafrost frozen heat is the last thing you want the temperature here is 13 degrees that'd be enough to melt the ice around the structure and to make it unstable so how would Chinese DIY engineering deal with this one by putting Mother Nature to work for them they would build in the dead of winter when ambient temperatures fall below freezing and cool the concrete to 5 degrees pouring it as quickly as possible before it sets by bringing in thousands of workers they built nearly 3,000 bridge piers in just seven months a breathtaking achievement epitomized by one of the iconic features of the line the spectacular eleven point seven kilometers long [ __ ] sewer bridge the longest permafrost bridge in the world the permafrost problem was finally conquered [Music] in all over 160 kilometers of the Ching hai Tibet railway is built on bridges like this 1/7 of the whole route but permafrost was not the only formidable natural challenge of the plateau the terrain is so high that it is deficient in one of the basic ingredients for life up here you battle to stay alive with an average altitude of four and a half thousand metres the Tibetan Plateau is unsurprisingly very sparsely populated about a third of the way across the plateau the Tibetan town of Toto has a population of 1,300 the locals have adapted to living at high altitude over hundreds of years but for anyone else it's a serious hazard up here breathing is much harder than at sea level despite that handicap Pasi is taking on the local pool champion to demonstrate air is mainly made up of molecules of nitrogen and oxygen about 1 in 5 molecules is oxygen at sea level there are plenty of molecules of both nitrogen and oxygen in every breath we take but the higher you go those molecules get fewer and fewer at 4,700 meters where I am now the amount of oxygen in the air is almost half of that at the sea level here the body finds it very hard to get enough oxygen out of the air into the blood and to the muscles where it's needed the harder we work the more oxygen our bodies need and if we don't get enough it can be fatal in severe cases fluids can leak into your lungs and brain and kill you as the Lasser Express travels over the plateau one of the most important jobs for the crew is to keep an eye on the passengers they're looking for signs of altitude sickness the train is now traveling at 4,500 meters above sea level medical advice recommends you should take five days to climb to this altitude to allow time to acclimatize the train has done it in just thirty two hours at this altitude around three quarters of people start to experience altitude sickness D'Andrea I can feel that the air is very thin when I was taking pictures even slight movements made me feel breathless on that line of guava since June our River I start to feel dizzy and sick my nose feels very dry and so does my child's so hyoe today he's also complained of tummy ache to reduce these symptoms remember those special oxygen generators they fill the carriages with enriched their the oxygen generators inside each carriage use a technique called membrane separation air from outside the Train is compressed and pumped through small tubes the walls of those tubes are made of a membrane containing small holes which allow more of the smaller oxygen molecules to pass than the larger nitrogen the unwanted nitrogen is exhausted from the Train via an outlet pipe while the oxygen-enriched air is fed into the carriages it raises the level in the air from 21% to 24% it's not much but it makes most people feel better but for people who are really suffering there is a backup system the staff gave afflicted passengers a tube which they can plug directly into a supply of 40% oxygen every birth and seat on the train has its own oxygen supply [Music] the Train is not pressurized like an aircraft cabin but the doors are sealed to keep the oxygen enriched atmosphere inside and there's a very slight positive pressure so the air outside can't seep in by comparison for the workers who built the track conditions on the plateau were a living hell hard physical labor at this altitude is not only difficult it's dangerous I really feel quite fragile up here at the plateau I have a bit of a headache and even though I'm walking at less than regular pace I'm completely out of breath many of the 3,000 workers who died building the first road into Tibet in the 1950s died from altitude sickness and the railway engineers were keen not to repeat the disaster but they needed extreme structures to be built at extreme altitudes including one in particular I just had to see this this is the highest railway tunnel in the world at 4905 metres above sea level the Chinese called the Fung Wah Shan tunnel the nearest door to heaven I can't even imagine what people who built this had to go through we are at the four thousand nine hundred metres and there's not a lot of oxygen so it had to be literally a headache to build it [Music] building this tunnel required hundreds of laborers to live and work at this extreme altitude so the railway company brought in one of China's leading experts on high-altitude medicine professor Tian Yi woo head of the ching hai' highland medical and scientific research center his mission was to help the engineers built the tunnel and other high-altitude structures without the tragic loss of life of the 1950's rogue construction during the initial building of lead Tibetan Railway as most of the workers were from regions around sea-level they were not adapted to the Highland aware of the dangers of rapid ascent professor Wu prepared a careful plan our first measure was a stepwise adaptation which meant letting them ascend gradually so from inland after the journey from Beijing to shining they'd stopped for three days and then a week stop at goal mood then ascend to the Tang cooler mountains professor Wu was supported by a vast team of 2,000 doctors and nurses infirmaries were built every 18 kilometers along the route to treat sick workers and professor wu made sure there was a good supply of oxygen [Music] during the process of building the railway there were 21 oxygen making stations built averaging about one for every 50 kilometers this would ensure that during the work every worker had a small oxygen supply device but the heavy cylinders made the work harder so instead oxygen generators were set up to pump oxygen enriched air through the tunnel to the workers of the face with the extra oxygen it was as if they were working 1200 meters closer to sea level but many of the tunnel workers still got sick so Wu's team installed 25 emergency hyperbaric oxygen chambers along the route of the line over time the work is adapted to the altitude by the fifth year the incidence of high-altitude illness was very low it was not a single case of serious high-altitude illness by October 2002 the workers had completed the Fung Wah Shan tunnel it was a major triumph it opened the way to the rest of the plateau and the route south to Lhasa but it wasn't fast enough for the Chinese government in 2004 Beijing announced that it wanted the railway completed by early 2006 a whole year ahead of schedule it was an almost impossible demand on an already ambitious program there was only one way they could pull it off they decided to leap ahead to the town of AM dough into bed and start building the railway from there in two directions at the same time one machine would lay track back towards goal mood while a second machine would build onwards towards Lhasa it would triple the speed of construction by the summer three teams of track players were blazing their way across the plateau in total 140,000 workers worked on the high-altitude section of the line thanks to the medical plan they avoided the fate of the workers of the 1950s who built the original road machine so despite having over a thousand cases of severe high-altitude illness over the five years no one died the mortality rate was zero [Music] thanks to the onboard oxygen supply the crew and passengers on the Lasser Express are traveling in relative safety [Music] but as they crossed the plateau their lives depend on another critical safety system to save money the line was built as a single track but that brings with it a constant danger if two trains traveling in opposite directions are accidentally routed onto the same line there could be a head-on collision but to control the trains there are no signals instead alongside the track every 15 or so kilometers there's a mobile phone antenna that passes information between the train and the control center 2300 there are crossing leaps short sections of double track where trains can pass each other 39 hours into its journey the Lasser Express is approaching one of these passing points Tangela the highest railway station in the world it's a ghostly place the station is simply a passing point for trains it's early afternoon and the Train is still 500 kilometres from Lhasa inside the passengers are protected from the extreme environment outside but while the Train protects the passengers from the environment it must also do the reverse it has to protect the fragile ecosystem of this ancient landscape from human pollution [Music] the Tibetan Plateau contains the Kakashi Lee and sangjung UN nature reserve the second largest nature reserve in the world it's larger than England and Wales combined it's a delicate ecosystem that could be easily disrupted and destroyed on most trains around the world sewage and wastewater are dumped straight onto the track but not here the heat from all that water would warm the permafrost and degrade it it would destroy the very foundations the train runs on so the Chinese have gotten green instead of dumping waste water on the track the Lhasa Express stores it in collection tanks below each carriage each tank holds 500 litres of wastewater enough for 250 toilet flushes [Music] every night a goal nude station a small fleet of many tankers drives along one of the platforms at 11:45 p.m. the Lasser express his sister train the t28 from Lhasa pulls in on its way to Beijing after crossing the plateau the trains tanks are full of waste water a small army of workers leaps into action they attach hoses to the tanks and pump the wastewater out the whole operation takes less than 10 minutes as the train leaves the station the tankers head off to dispose of the waste safely 900 relieved passengers head off to Beijing Pasi is impressed by the efforts to conserve this fragile ecosystem but in his trip across the plateau he's discovered that all is not quite right with the railway the line itself is still under threat despite all the efforts to keep the ground beneath the line frozen the Ching hai Tibet railway is being attacked by an unexpected enemy in parts of the plateau lies a natural phenomenon that has been here for thousands of years sand this is quite impressive I didn't really expect to see Santos up here in the plateau it's almost like being at the beach the problem with sand is that unlike mud its grains don't stick together if I stick my hand in here on a windy day like this it just blows away and it's blowing straight towards the railway embankment half a kilometre away and this is where the problem comes descent that has been blowing in the wind is filling up the gaps in the rock embankment as the crushed rock embankment fills up with sand it loses its ability to cool the ground below in time this could lead to the permafrost thawing out buckling the track so the railway companies trying its best to stop this happening they have erected dozens of these fences to keep the sand away from the tracks you can see how the sand has piled up behind the fence as the wind blows through the fine mesh of the fences it slows down and drops the Sun but despite all their efforts the sand here has already permeated the Rock embankment the sand only affects a small section of the line but there's another much more serious threat to the long-term future of the railway and this one is man-made the permafrost on the plateau is extremely sensitive to changes in temperature and global warming is slowly heating it up our country has done research in this field and has given us a set of data speculating that the temperature of the ching hai' tibetan plateau will rise by two point two to two point six degrees celsius over the next 50 years the railway is designed to cope with a three degree increase in average temperature but other factors could raise the temperature far more than this across the continent and particularly in neighboring India coal is used extensively in fires and furnaces that produce smoke containing black particles of soot much of that sort falls onto the snow that covers the Tibetan Plateau in winter the dark particles cause the dirty snow to absorb more of the sun's heat than clean snow in spring the snow now melts earlier than before adding to the warming of the plateau despite all the measures to keep the rail bed frozen if the temperature rises more than three degrees the railway could be in trouble [Music] the Lasser Express sweeps over the stunning triple spam bridge across the sacred sky achoo River for the crew of the Train it's a welcome sight after 47 hours it's a sign they are nearing their journey's end and this is it the vast new Lhasa station at 35 million dollars it's a symbol of the Chinese determination that the railway is here to stay with this line Chinese engineers have proved they are among the best in the world and they've laid the foundations for an expansion program the like of which the world has never seen in the next five years China will spend an estimated 300 billion dollars constructing over 30,000 kilometers of new railways for Pasi Litella his time on the plateau has come to an end coming up here has been stunning experience for me I already had a lot of respect for people who built this railway but only now I truly realized the challenges they faced I mean this is a tough place to work headaches shortness of breath freezing winds not only they got the railway built but from an engineering point of view it really is quite amazing the Ching hai Tibet Railway is a truly monumental engineering achievement a vast labor of human endeavor and ingenious low-tech engineering that shows the way forward for new railway lines all over the world perhaps the start of a new golden age of Railways you

Channel: Free Documentary

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Keywords: Free Documentary, Documentaries, Full documentary, HD documentary, documentary - topic, documentary (tv genre), engineering, engineering documentary, constructions, construction documentary, megastructures, engineers at work, construction, railway, railway documentary, railway construction, railway megastructures, railway engineering, technology, technology documentary, tech documentary, Qinghai-Tibet railway, highest railway, railway india, highest railway in the world

Id: uTSpdD6MswA

Length: 49min 23sec (2963 seconds)

Published: Sun Aug 16 2020

Reddit Comments

[u/Skibbadadeebop]

"The uploader has not made this video available in your country."

BITCH I live in the same country where the damn video was shot!!!

[u/USA_DeMockraNaZi]

Beautiful scenery, also downloaded a copy, thanks