Whose Crazy Idea is this?

I have put it on record that I cannot deal with heights. Just watching any video of people being active at height turns my stomach to jelly, which then whizzes backwards and forwards between my head and my feet. I brought you a video recently showing maintenance workers climbing to the very top of a radio mast - but at least they had a sensible reason for doing so. Whose crazy idea is this?

Here we have a narrow wooden platform bolted to the side of a cliff so people can walk along it. Up a cliff. Like near the top. Who thinks this is fun? The Chinese obviously think so. It appears to be a tourist attraction now, though it is not clear whether it once had a practical purpose. Judge for yourself...