The lead only area covers about 30 feet to either side of the upper bridge. Once you're at the bottom, it's pretty hard to opt out. There was a large, greasy shit at the bottom, attesting to the difficulty of reaching facilities easily. You can walk back up the canyon towards the Schoolroom, but there's a spot where you have to negotiate a 15 foot steep/smooth slab, risking a fall forward into the drink if you go down too fast.