 Brimble Pit and Cross Swallet Basins

Brimble Pit and Cross Swallet Basins () is a 154.3 hectare (381.3 acre) geological Site of Special Scientific Interest between Wookey Hole and Priddy in the Mendip Hills, Somerset, notified in 1987.The site covers the two adjacent karstic basins draining into Brimble Pit and Cross Swallet.