Hike along the face of Mount Huashan in China, thousands of feet in the air as you walk over wooden 12 inch wide planks tied into the face of the cliffs. This is definitely not a family friendly activity. It doesn't sound that bad, but there are NO hand rails, and the only thing keeping you on the side of the mountain is a safety harness, if you so choose to buy one. If you plan on checking out Mt. Huashan, I've got a simple travel tip for you. Get some good hiking shoes and watch your step!