The building on the cliff edge on the other side of the gorge is the sutra library at the ancient Cloud Rock Temple in Sichuan Province.

There are a thousand paths to enlightenment, but only two ways to access the 1,000-year-old sutra library: either by means of a very long and winding mountain track, or else through a shortcut by means of a bridge formed by just two chains –- one functioning as a very narrow, bridge deck, and the other serving as handrail.

This photo taken in the 1930s, shows a Chinese Buddhist monk returning from the library through the chain bridge.