Guoliang Tunnel Road

The road in Taihang mountains was built by local villagers: it took five years to finish the 1200 metre long tunnel which is about 5 meters high and 4 meters wide. Some of the villagers died in accidents during construction; undaunted the others continued. On May 1 1977 the tunnel was opened to traffic. It is located in the Taihang Mountains in the Hunan Province of China.