Cliff walkway in Huangshan National Park (Yellow Mountains), Anhui Province, China. When you visit this UNESCO World Heritage Site, you have to be prepared for a lot of up and down walking to get to the good view sites.
Quite an engineering feat. It strikes me as a much more eco-friendly solution than blasting a trail out of the cliff face, as well as being more user-friendly than a narrow trail with uneven surfaces. This really gives a good idea of what the trail is like.