Maryland Department of Natural Resources

Two Locks Caves, Washington County

Photo of someone suspended from a rope entering a hole in a rock wall
Two Locks Cave

Geology:

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

Description:

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.

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Washington County cave index map
Round Top Summit Cave Round Top 8 Cave Keefer Road Cave Two Locks Cave Schetromph Cave Fairview Cave Howell Cave Hogmaw Cave Snivelys Cave Groundhog Cave Winders Cave Mt Aetna Cave Crystal Grottoes