At 1,956 km, the Qinghai-Tibet Railway is a plateau railway featuring the highest altitude and longest distance in the world. It starts from Xining, Qinghai province, and ends in Lhasa, Tibet autonomous region.

The Qinghai-Tibet Plateau used to be an isolated region because of transportation difficulties, high altitude, steep terrain and complex geographical conditions.

American travel writer Paul Theroux gave an assessment about railways on the plateau region in one of his diaries in the 20th century, noting that as long as the Kunlun Mountains exist, a railway would never reach Lhasa.

The construction of the Qinghai-Tibet Railway was started in 1958, and the section between Xining and Golmud was completed in 1984. The section between Golmud and Lhasa was completed and started operating in 2006.

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The Qinghai-Tibet Railway transported 803 million metric tons of goods and 265 million passengers between 2006 and 2022, according to its operator.

Mar epul egy masodik vasutvonal Tibetbe, az Szecsuan iranyabol.