Below Cruncher is a crumbling dam that creates the rapids Rocket Ride/Poop Chute. It's worth noting that at medium to high flows a low head can form depending on the flow through the canyon and the level of the pool below. Scout if you have any concerns. The dam in the past decade has also seen the effects of heavy erosion. Watch for rebar and undercuts forming just under the surface of the lip, especially closer to right (Poop Chute.)