Long Island is approximately 15 km long and 5 km wide and is primarily basalt rock of the North Mountain ridge. The southern coast (St. Mary's Bay side) of the island is mostly faced with steep cliffs with the north coast (Bay of Fundy side) featuring smaller cliffs and round-rock beaches. There are several coves along both sides with Bear Cove (in Tiverton), Israel's Cove (also known as Pirate's Cove, located in Tiverton), Flour Cove (central on the island), and Beautiful Cove (in Freeport) being the best known and easily accessed coves.