The Chola Mountain Tunnel is the world’s highest super long road tunnel with a length of 7,079 meters in Derge County of Garze Tibetan Autonomous Prefecture, southwest China’s Sichuan Province. Launched in September 2012, it is still under construction and expected to be completed in 2017. As a key project along the National Highway 318, the tunnel will enable vehicles to take ten minutes to pass through the mountain. [Photo/Xinhua]

The Chola Mountain Tunnel is the world’s highest super long road tunnel with a length of 7,079 meters in Derge County of Garze Tibetan Autonomous Prefecture, southwest China’s Sichuan Province. Launched in September 2012, it is still under construction and expected to be completed in 2017. As a key project along the National Highway 318, the tunnel will enable vehicles to take ten minutes to pass through the mountain. [Photo/Xinhua]

The Chola Mountain Tunnel is the world’s highest super long road tunnel with a length of 7,079 meters in Derge County of Garze Tibetan Autonomous Prefecture, southwest China’s Sichuan Province. Launched in September 2012, it is still under construction and expected to be completed in 2017. As a key project along the National Highway 318, the tunnel will enable vehicles to take ten minutes to pass through the mountain. [Photo/Xinhua]

The Chola Mountain Tunnel is the world’s highest super long road tunnel with a length of 7,079 meters in Derge County of Garze Tibetan Autonomous Prefecture, southwest China’s Sichuan Province. Launched in September 2012, it is still under construction and expected to be completed in 2017. As a key project along the National Highway 318, the tunnel will enable vehicles to take ten minutes to pass through the mountain. [Photo/Xinhua]

The Chola Mountain Tunnel is the world’s highest super long road tunnel with a length of 7,079 meters in Derge County of Garze Tibetan Autonomous Prefecture, southwest China’s Sichuan Province. Launched in September 2012, it is still under construction and expected to be completed in 2017. As a key project along the National Highway 318, the tunnel will enable vehicles to take ten minutes to pass through the mountain. [Photo/Xinhua]