Discover Maryland’s Hidden Underground Treasure
At The Crystal Grottoes Caverns, we’re more than just a natural wonder—we’re a family-run destination dedicated to preserving one of Maryland’s most beautiful and unique underground spaces. Located just outside Boonsboro, our caverns have been captivating visitors with their stunning limestone formations and natural beauty since first opening to the public in 1922.
We take pride in offering a cave experience that’s unlike any other in the region. With nearly 900 feet of naturally preserved passageways, The Crystal Grottoes is the most naturally kept cave in the state. Our goal is to share the awe and wonder of this rare geological formation while keeping it as close to its untouched state as possible.
A Family-Owned Experience, Rooted in History
Since its accidental discovery over a century ago, The Crystal Grottoes has remained a locally owned and operated site. We believe in the power of history, education, and adventure—and we love introducing new generations to the magic that lies just beneath the surface.
When you visit us, you're not just taking a tour. You’re stepping into a living, breathing piece of Earth’s history—and you’re supporting a team that’s passionate about protecting and sharing that history with care and respect.
What We Offer:
Guided tours through stunning natural formations
An educational look at geology and cave preservation
A fun and family-friendly experience for all ages
Whether you're a history buff, nature lover, or simply curious about what lies underground, The Crystal Grottoes Caverns offers an unforgettable journey into the natural beauty of our planet—just waiting to be explored.
Come visit us and see what’s been hidden beneath Maryland for millions of years!
