Building a railway through “the roof of the world” (Tibet).

  • A clever low-low-tech solution to the problem of ground’s freezing & thawing messing up your hard structure. (Also a clever low-tech, but not low-low-tech solution.)
  • Specific numbers that matter a lot: how many days do you need to stop at what altitudes on your way up to work at 5000 metres (15,000 feet) above sea level?

National Geographic:-Megastructures-Extreme Railway (por Simon Peter)

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