That's an awesome video. I love hiking, some good hikes up here in New England, the closest thing I have come to something like that is the Knife Edge on Mt. Katahdin in Maine. It's about a half a mile section where you have about a 2 foot wide path of pretty jagged rocks and 2,000ft drops on either side of you. Not too bad compared to that video but it is nerve wracking to say the least.