hats off to them and their mad skillz.... http://ngm.nationalgeographic.com/2011/05/yosemite-climbing/on-assignment-video
The title of your thread tells it all. LOL I don't like high bridges or standing on roof tops. Anything above 22 feet in a deer stand scares me. LOL Yup... they're Nutz. Of course.... a lot of them don't make it either.
When I saw the guy who was literally scaling the mountain from beneath it and hanging on with nothing but his own fingers and toes -- and he still had 70 feet to go to make it out from beneath the ledge... I knew right then they were crazy.