http://tunnelbuilder.com/News/Worlds-Second-Longest-Road-Tunnel-Opens-in-China.aspx World's Second Longest Road Tunnel Opens in China], last accessed April 2013 It is also the third longest road tunnel overall in the world, after the Lærdal Tunnel in Norway and the Yamate Tunnel in Japan The 18040 meters long tunnel, crosses under the Zhongnan Mountain ( ).