Salang Tunnel is a high mountain tunnel at an elevation of 3.400m (11,154ft) above the sea level, located in the Hindu Kush, a mountain range that stretches between central Afghanistan and northern Pakistan. It has insufficient lighting, inadequate ventilation and potholes.
The tunnel is 2.67-kilometre-long (1.66 mi) long. It bypassed the challenging Salang pass. The tunnel was built by the Soviet Union in 1964. It has become a traffic nightmare: it was built for a daily use of 1,000 to 2,000 vehicles and now between 7.000 and 10.000 vehicles pass through the tunnel daily. High danger of death from both crashes and carbon- monoxide poisoning. There is little by way of ventilation or illumination, and dust and fumes often reduce visibility to a couple of yards.
It’s said to be one of the most dangerous tunnels in the world. This engineering marvel can be closed anytime due to deadly avalanches. When it was completed in 1964, it was the highest road tunnel in the world. The tunnel is located on the A-76 road from Kabul north to Mazar-e-Sharif. The surface of the road through the tunnel is now unpaved. Traffic has torn the pavement to shreds.
Pic: By Michal Vogt - , CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=7335181