Boonsboro, Maryland: Crystal Grottoes Caverns: Maryland's Only Show Cave
Crystal Grottoes Caverns claims to have "more formations per square foot than any cave known to Man" and to be "the most naturally kept cave in the world."
Crystal Grottoes Caverns
- Address:
- 19821 Shepherdstown Pike, Boonsboro, MD
- Directions:
- Crystal Grottoes Caverns. 1.5 miles west of Boonsboro, on the south side of MD-34/Shepherdstown Pike.
- Hours:
- Summer daily 10-5; off-season F-Su. (Call to verify) Local health policies may affect hours and access.
- Phone:
- 301-432-6336
- Admission:
- Adults $23.
- RA Rates:
- Worth a Detour
Visitor Tips and News About Crystal Grottoes Caverns: Maryland's Only Show Cave
Reports and tips from RoadsideAmerica.com visitors and Roadside America mobile tipsters. Some tips may not be verified. Submit your own tip.
Crystal Grottoes is the only show cave in the state of Maryland. It is on Maryland Route 34 between Boonsboro and Antietam National Battlefield.
[Olivia B, 04/29/2024]Latest Tips Across Roadside America
Catch up on the latest discoveries from the road.
Explore Thousands of Oddball Tourist Attractions!
Unique destinations in the U.S. and Canada are our special obsession. Use our attraction recommendation and maps to plan your next road trip.
The cave notably claims to have "more formations per square foot than any cave known to Man" and to be "the most naturally kept cave in the world." Its entrance was discovered while quarrying rock to build adjacent Highway 34.