The scariest Mountain Road in China

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This is the hanging wall highway located in Wuxi, Chongqing, China. Hanging wall highway is a modern product, built in the 1970s, from 1972 to 1977, also known as Guo Liang Cave, Guo Liang Tunnel. It was cut by local people purely by hand. It is about 5 meters high and 4 meters wide, with a total length of about 1,300 meters, and is known as the "Ninth Wonder of the World".