Brownstone Quarry (Brownstone Exploration & Discovery Park)
Connecticut · 0–25.9 m
A flooded 27-acre historic brownstone quarry in Portland operated as an adventure park, with 80-100 foot cliffs surrounding clear fresh water. Scuba diving is permitted in the north quarry for certified divers who buy an adventure pass, with depths to about 85 feet and submerged quarry features and attractions to explore.