Highest Railway Line/Highest railway Station
The Qinghai-Tibet railway in China is a 1956 km long line, most of which lies 4000 meters above sea level. Its highest point reaches an altitude of 5072 meters. Carriages are pressurized like aircraft cabins, and oxygen masks are available.
At an altitude of 5068 above sea level, the Tanggula railway station in Tibet is the highest railway station in the world. the un-staffed station opened on 11 July 2006 and is located at the highest point on the Qinghai-Tibet railway.