Imagine yourself clinging to a cliff face with nothing but uneven, worn wooden planks and chains to keep you from plummeting 7,000 feet to your untimely demise. Don't worry: You can rent a little red safety harness for $5. No one will make you wear it, though.
A footwide path made of wooden planks winds around the surface of a cliff. Climbers harness themselves to a wire and grab the chain to keep from falling.