High risk, high loss obstacle, especially when wet, snowy, or icy.
This is the Waterfall into the Wall Challenge. It’s narrow and you are leaning into the wall on a waterfall. One approach is to keep your driver side tires up on the wall. Another is to try to stay away from it. Both are risky. There is one rock sticking out that has taken out many Jeep doors and/or side panels. I hit my front MCE fenders on this (you can hear it on my second attempt). I was ever so close to hitting the door, literally 1-2”. You have to commit at some point.