Wall-hanging road on the cliff | Artificially dug cliff tunnel | Amazing miracle

This is a cliff tunnel in Chongqing, China. It was built in the 1970s, Also known as Guoliang Cave, Guoliang Tunnel, Guoliang Village Cliff Tunnel, It is hand-cut by 13 local villagers. It is the only passage leading to Guoliang Village. Known as the “ninth wonder of the world“! 👍👍