Crystal Grottoes Caverns
A Maryland cave with tours going down every half hour from 10am to 5pm.
Maryland, from $23
There is one show cave open to visitors in Maryland: Crystal Grottoes Caverns.
Updated 2026-10-22. 1 of 1 checked in full against official sources.
A Maryland cave with tours going down every half hour from 10am to 5pm.
Maryland, from $23
1 show cave runs public tours. We leave out wild caves that are closed, gated or need a permit.
Closed shoes with grip, because paths are often wet. Most caves stay between the high 40s and low 70s °F all year, so a light layer is enough.