>>2335789it doesnt have to be big to be an impediment. a 15ft drop is enough to seriously injure. and its not just straight waterfalls, its almost any gorge or ravine or canyon walls of high angle terrain. slot canyons and overflowing creeks preventing walking alongside water. plenty of places to follow water to your doom way away from civilization in the more rugged parts of the world.
Ed abbey himself nearly got himself killed stuck jumping down down a canyon in darkness into pools of unknown depth.
