June 22, 2020
The Zangga Tunnel is located in the Yarlung Zangbo Gorge area of Tibet. It is located at an altitude of more than 3,500 meters. The total length of the tunnel is 8.876 kilometers. The project cost is 458 million yuan. The construction of the four export areas, with a contract period of 54 months, is listed as a major and difficult control project across the board.