Monkey Wall has some fine bouldering problems and some good moderate routes. The classic of the buttress is Banana Finger (V3) which is on every gritstone boulderers ticklist.
100feet along the trail from Triangle Buttress, you see this undercut buttress.
Browse More Classics in Monkey Wall
Mountain Project's determination of some of the classic, most popular, highest rated routes for Monkey Wall:
Banana Finger V3 Boulder, 22 feet
Banana Finger Direct V5 Boulder, 18 feet
Monkey Corner 5.4 Trad, 25 feet
Featured Route For Monkey Wall