There are a few rounded domes here near Saugus (just NE of Boston), up to 40 ft tall. This is near Lynn Woods Reservation north of Boston. The climbs are generally low end difficulty. Much of this is fairly small and probably insignificant. It may not be worth your effort to find it.
Small boulder
Woodpecker, 8 Z Crack, 8
Bigger crag
Heimerdinger, 2 S Curve, 3 Sarahs Honey, 7