Italy
The Salang Tunnel (Dari: تونل سالنگ Tūnel-e Sālang, Pashto: د سالنگ تونل Da Sālang Tūnel) is a 2.67-kilometre-long (1.66 mi) tunnel located at the Salang Pass in northern Parwan Province of Afghanistan, about 90 km (56 mi) north of the nation's capital, Kabul. At nearly 3,400 m (11,200 ft) above sea
level, the tunnel work was originally completed by the Soviet Union in 1964. The Salang Tunnel is of strategic importance as it connects by road Central Asia with South Asia, 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.
Listen to the audio guide for Salang Tunnel Free on WIP — starts by itself when you arrive, even with the screen off