Qinghai-Tibet Railway, the world’s highest railway, extends 1956 kilometers from Xining to Lhasa. About 960 kilometers of the line is more that 4,000 meters above sea level and the highest point is 5,072 meters. The railway was commissioned on July 1 2006. Enjoy the beautiful scenery from the high speed train. It took us 25 hours from Xining to Lhasa!