Qinghai-Tibet Railway is the highest railway in the world. Some 960 kilometers of its tracks are located 4,000 meters above sea level and the highest point is 5,072 meters, at least 200 meters higher than the Peruvian railway in the Andes, which was formerly the world’s most elevated rail. The highest point is located close to the Tanggula Station, which is a unstaffed station opened for service on July 1, 2006
The railway is the world’s longest plateau railroad, extending 1,956 kilometers from Qinghai’s provincial capital Xining to Lhasa in Tibet. Qinghai-Tibet Railway is the first railroad linking Tibet with the rest of China.
About 550 kilometers of the tracks run on frozen earth and due to that the construction has been extremely difficult and lengthy.Thus, is most be considered as one of the most extensive infrastructure projects in the world. The increase after Golmud Pass offers a dramatic landscape. Because of the low pressures, the oxygen level tend to be about 35-40 per cent less relatively to the level at sea level. Consequently, extra oxygen for passengers is added in the carriages.