The Fenghuoshan Tunnel (simplified Chinese: 风火山隧道; traditional Chinese: 風火山隧道; pinyin: Fēnghuǒshān Suìdào; lit.It is 1,338 metres (4,390 feet) long, and stands 4,905 meters (16,093 feet) above sea level.It is part of the Qinghai–Tibet Railway, linking Qinghai and Tibet that was completed in 2006.[1][2][3] The tunnel is located in the western, sparsely populated Zadoi County, Qinghai (the eastern edge of the Hoh Xil mountainous region between the Kunlun and Tanggula mountain ranges).This article about a building or structure in China is a stub.