9 Roads You Would Never Want to Drive On

The history of the tunnel is almost as amazing as its "windows." It was constructed in the 1970s so that residents in the remote Guoliang Village, in an interior valley, could access the outside world without having to walk a dangerous footpath hewn into the mountainside. Most of the work on the tunnel was performed by 13 villagers, who used drills, hammers and chisels to dig the route over a five-year period.