The line includes the Tanggula Pass, which, at above sea level, is the world's highest point on a railway. Tanggula railway station at is the world's highest railway station. The Fenghuoshan tunnel is the highest rail tunnel in the world at above sea level. The New Guanjiao Tunnel is the longest tunnel between Xining and Golmud, and the Yangbajing tunnel is the longest tunnel between Golmud and Lhasa. More than , over 80% of the Golmud-Lhasa section, is at an elevation of more than . There are 675 bridges, totalling ; about of track is laid on permafrost.