chinatibettrain.com

N7RZ8 TIL that the longest downhill road in the world is over 100 km's long. It is a descent from Nepal to Kathmandu valley on the road connecting Lhasa to Kathmandu.
Oo6Ze TIL China Runs A High Speed Train From Beijing, China to Lhasa, Tibet, about 1272 miles away, and passes through the highest elevation attained by any train in the world (16,600ft) requiring oxygen to be pumped into the specially built passenger cabins and with a doctor onboard every train