Crystal Grottoes Caverns | Boonsboro, MD | The Largest Cave Formations Per Sq Ft. in the World

The Crystal Grottoes Caverns in Boonsboro, MD is over 100 years old. It has the most cave formations per square ft. than any cave known to man! It was discovered in 1920 after workers blew up limestone to pave Route 34. Ever since more areas of the cave were discovered and in 1922 opened up to the public for only 7 cents per ticket! Visit https://www.crystalgrottoescaverns.com/ to learn more.

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