American Cave Museum
The nonprofit American Cave Conservation Association (ACCA) operates Hidden River Cave and the American Cave Museum as part of our educational initiative to support the protection of caves, karstlands, and groundwater resources.
A state-of-the-art showcase of underground natural history – a little bit of Smithsonian in rural Kentucky.”
— William Stolzenburg
Nature Conservancy Magazine May/June 1995
— William Stolzenburg
Nature Conservancy Magazine May/June 1995
Explore Kentucky’s Only Museum Devoted Entirely to Caves
Karst Geology
Learn how caves form, why sinkholes develop, and how Kentucky’s karst landscape shapes the underground world beneath our feet.
Archaeology
If you thought caves were only used by “cavemen,” think again. Discover the vast human history preserved in caves, from early exploration to archaeological discoveries.
The Many Uses of Caves
Throughout history, caves have been used for shelter, water, food preservation, tourism, and even electricity — as Hidden River Cave once helped power the City of Horse Cave.
Groundwater Quality
Learn how groundwater moves through Kentucky’s karst landscape, why it is especially vulnerable to pollution, and what you can do to help protect this vital natural resource.
Cave Wildlife
Discover the fascinating wildlife that lives in caves, including bats, salamanders, fish, and other unique species specially adapted to life in the underground world.
The Early History of Mammoth Cave, Kentucky Show Cave Wars & Floyd Collins
Kentucky’s Cave Country is rich in history. Learn how saltpeter was mined from Mammoth Cave during the War of 1812 and explore the fascinating era of the Kentucky Show Cave Wars, when cave owners competed to attract visitors from around the world. View historic photographs from this remarkable period and discover the story of Floyd Collins, the famous Kentucky cave explorer whose dramatic rescue attempt captivated the nation in 1925. Today, Floyd is remembered as the “Greatest Cave Explorer Ever Known.”
Join the American Cave Conservation Association (ACCA)!
Hidden River Cave and the American Cave Museum are operated by the nonprofit American Cave Conservation Association (ACCA). Donations and membership dues help support our educational programs and operations at the American Cave Museum and also allow us to sponsor conservation efforts that directly protect and preserve caves and groundwater resources nationally.
Annual and monthly memberships are available for your convenience.
Clicking the join or donate buttons below will take you to our secure membership portal.
Membership Benefits
ACCA members are part of a special group working to preserve one of the most unusual environments on Earth. Your support truly makes a difference.
*Regular Membership ($25) Benefits Include:
- FREE admission to the American Cave Museum
- 20% discount on Hidden River Cave tours and Gift Shop items for Member & Guests
- Discounted rates for special exhibitions or events through our affiliation with the Southeastern Museums Conference - for more information, please visit: https://www.semcdirect.net/SERM-Participants
- Reciprocal admission to over 60 museums in the Southeast USA
- Subscription to our quarterly newsletter ACCA News
- voting privileges for election of ACCA Board of Directors
- Opportunities to participate in volunteer projects and educational workshops hosted by the ACCA
- More importantly, you will receive the opportunity to help conserve the fragile and irreplaceable natural caverns and karst areas located throughout America.
*Supporter Membership ($50)
All Regular Membership benefits plus FREE Hidden River Cave tour admission for 1 Member
*Sustainer Membership ($100)
All Regular Membership benefits plus FREE Hidden River Cave tour admission for 1 Member and 1 Guest
*Guarantor Membership ($250), Benefactor Membership ($500), Patron Membership ($1,000), Life Membership
All Regular Membership benefits plus FREE Hidden River Cave tour admission for 1 Member and up to 4 Guests
*Our reservation system does not currently provide a way to include member discounts for tour reservations. If you are a member, please call us at (270) 786-1466 to book your tour. Alternately, you can present your membership card when you arrive.
Please visit the American Cave Conservation Association website for additional donation options and gift membership information.
You can also mail a check or money order (U.S. Funds only) payable to:
American Cave Conservation Association • P.O. Box 409 • Horse Cave, KY 42749
Hidden River Cave & The American Cave Museum are operated by the American Cave Conservation Association,
A National 501 (c) 3 Nonprofit Organization.











