The line includes the Tanggula Pass, which, at 5,072 m (16,640 feet) above sea level, is the world's highest railway. Tanggula railway station at 5,068 m (16,627 feet) 33°00′18.50″N 91°38′57.70″E is the world's highest railway station. 1,338 m (4,390 ft) Fenghuoshan tunnel is the highest rail tunnel in the world at 4,905 m (16,093 ft) above sea level. The 4,010 m (13,160 ft) New Guanjiao Tunnel is the longest tunnel and the culminating point 3,700 metres (12,100 ft) between Xining and Golmud and 3,345 m (10,974 ft). Yangbajing tunnel is the longest tunnel between Golmud and Lhasa. More than 960 km (600 mi), over 80% of the Golmud-Lhasa section, is at an elevation of more than 4,000 m (13,123 ft). There are 675 bridges, totalling 159.88 km (99.34 mi); about 550 km (340 mi) is laid on permafrost.