Guoliang Tunnel
The road is situated in the Taihang ?ountains, Hunan Province of China. It is 1,200-metre-long tunnel which is about 5 m high and 4 m wide. Before the construction of the tunnel, Guoliang Village was almost cut off from its surrounding towns and villages. Its construction took 5 years but on May 1, 1977, the tunnel was opened to traffic. The wall of the tunnel is uneven and there are more than thirty windows of different sizes and shapes. One article suggested they carved windows mainly as a way to push the rubble out.
