Maryland Department of Natural Resources

Two Locks Caves, Washington County

Return to cave gallery index


Two Locks Caves are in the Beekmantown Limestone that strikes N. 30º E. and dips 80º E. and are developed along the bedding planes.

Two Locks Cave (photo by Dennis Slifer)
Two Locks Cave


Several small caves and solution holes are developed in the bluffs along the C & O Canal, south of Two Locks. The northernmost cave is a 4-foot square opening in the cliff face, 20 feet above the river. It consists of a single room 10 feet in diameter and 5 feet high and is used as a roost by numerous pigeons. One hundred feet south of here is a fissure which extends south for 30 feet. The entrance to the largest cave is 150 feet to the south, in a small hollow 30 feet above the river. It trends northeast as a crawlway for 40 feet before opening into a somewhat higher passage with two side passages. These extend for short distances on both sides of the entrance passage as low crawlways.

Click on a cave name or a number on the map for more information

Washington County cave index map