a little hint: carry tinder and flint and steel with you. when you get stuck on a ledge, place the tinder a little ways off from the edge of the cliff, but not too far. Then, back up to the edge of the cliff, so that your heels are at the edge, and the tinder is a little in front of you, but mostly below your feet. Then light a campfire. If you have the angle right, it'll knock you off the cliff. And since you're in a swamp, you won't have to worry about burning the place down. =P
