Located in the Qinling mountains in northwest China's Shaanxi province, the Zhongnanshan Tunnel is an important part of the road network between Xi’an and Ankang. It’s one of the longest tunnels in the world.
The tunnel, also called Qinling Zhongnanshan Tunnel, is 18.02 km long. It is the longest tunnel in China and takes 15 minutes to go through it. It opened on 20 January 2007 and it’s part of a national highway linking Baotou in Inner Mongolia in North China to Beihai in Guangxi Zhuang autonomous region in South China.
The surface of the tunnel is paved. It’s the longest two-tube road tunnel in the country. The tunnel plays an important role in reducing travelling times in the Shaanxi province, cutting the drive from Xi'an to Zha. In order to reduce visual fatigue and ensure traffic safety, the world’s most advanced tunnel lighting system is installed in the tunnel. This spectacular tunnel is really worth a visit.