Salang Tunnel, Salang Pass

The Salang Tunnel is a 2.67-kilometre-long tunnel located at the Salang Pass in the Hindu Kush mountains, between the Parwan and Baghlan provinces of Afghanistan, about 90 kilometers north of the city of Kabul. Nearly 3,200 m above sea level, it was completed by the Soviet Union in 1964 and connects northern Afghanistan with the capital, Kabul, and southern parts of the country. The Salang Tunnel is of strategic importance and is the only pass going in a north–south direction to remain in use throughout the year, although it is often closed during the cold winters by heavy snowfall. ()