The beach can become crowded during summer months. The boulders themselves are secluded and bordering some private property. The rock can crumble. Watch out for the Devil's Block (an overhanging block that if climbed on could fall) marked by chalk Xs.
These are off of Washington Street. It is about a minute long approach on either side (difficult during high tide).
4 Total Routes
Browse More Classics in Underworld Boulders
Mountain Project's determination of some of the classic, most popular, highest rated routes for Underworld Boulders:
Satan Kicked Kevin's Ass V0+ 4+ Boulder, 8'
Satan Let Kevin Go V1+ 5 Boulder, 15'
Satan Ate My Donut V1-2 5 Boulder
Featured Route For Underworld Boulders
The crux is at the end of the route. The ledge at the end is off!!! High feet!!!! It is a great photo-op. It was named this because Kevin broke a hold and fell 15 feet onto jagged rocks. Kevin was not injured, but definitely use a crash pad here. It has mostly solid rock, but watch your step and grip. ...[more] Browse More Classics in MA