HIKE the CLIFF of Huashan, China

What could possibly go wrong? The tourist trek thousands of feet up a Chinese mountain along wooden boards that were nailed together 700 years ago, extremely narrow and treacherous walkway along cliffs at a scenic mountain in China's Shaanxi Province.

The precipitous Chang Kong Cliff Road on Haushan mountain was built more than 700 years ago by hermits seeking ‘immortals’ they thought were living deep in the mountains.
The walkway is only a foot width wide and has been built clinging to the absolutely vertical cliff. One misstep would send pilgrims plunging thousands of feet down into the valley.
These days, anyone brave enough to navigate the path does have to wear a special safety harness.
Source: dailymail.co.uk