Welcome to the Underground!
Citadel Caverns is now accepting inquiries from prospective businesses or individuals who are needing a secure, climate controlled storage or business location. Citadel Caverns is located underground, in a former limestone mine in Atchison, Kansas. The undergound facility is commonly refered to as a "cave," but it is actually a very stable, limestone mine. Total square footage inside the facility is over 2.7 million square feet.
For more information about the history of our facility, please visit our History page.
Facility tours are also available. For tour information, please visit our Tours page.
For more information about business opportunities in Citadel Caverns, please visit our "Why Underground?" page.