Connecting Xining, Qinghai Province, to Lhasa, Tibet Autonomous Region, in People’s Republic of China, the 1215-mile Qinzang railway “includes the Tanggula Pass, which, at 5,072 m (16,640 feet) above sea level, is the world’s highest rail track.” Click here for more pictures. Video after the break.

[Sources 1 | 2]