Ruby Falls

This massive underground waterfall has been a family favorite for travelers for over 85 years.

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Diamond Caverns

For over 153 years Diamond Caverns has offered tours of Kentucky's most beautiful cave. Presented by state-of-the-art lighting, Diamond Caverns features intricate drapery deposits lining the halls in cascades of naturally colorful calcite with thousands of stalactites, stalagmites and flowstone deposits throughout the entire tour.

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Limestone Caves

National Caves Association

Celebrating 50 years, the Association has a membership of over 80 caves across the nation including Barbados and Bermuda.

Purpose of the NCA


The National Caves Association (NCA) is a non-profit trade organization that was organized for the purpose of promoting and improving conditions for the Show Cave Industry throughout the United States by:

    (a) promoting public interest in and attendance at Show Caves;

    (b) promoting public education and awareness with respect to conservation and preservation of all caves, including without limitation Show Caves;

    (c) conducting public relations efforts with respect to matters that are germane to the conservation and preservation of all caves, the operation of Show Caves, and the safety and enjoyment of Show Caves;

    (d) encouraging membership and participation in the Association;

    (e) identifying and addressing issues pertinent to managing, operating and/or owning Show Caves;

    (f) promoting methods of operation of Show Caves that enhance business performance, safety, and the conservation and preservation of Show Caves;

    (g) promoting and supporting legislation that provides for conservation and preservation of caves, including without limitation Show Caves, and promote and support legislation that provides for favorable business conditions for Show Caves;

    (h) presenting information and articulating the Association’s position to government agencies with respect to matters that are germane to the conservation and preservation of all caves, the operation of Show Caves, and the safety and enjoyment of Show Caves;

    (i) conducting annual conventions and educational seminars for members in furtherance of the Association’s purpose;

    (j) implementing industry guidelines for Show Caves;

    (k) compiling, preserving, and publishing cooperative data (technical and promotional) with respect to Show Caves;

    (l) promoting and encouraging the development of a spirit of cooperation, courtesy, and respect among managers, operators, and owners of Show Caves; and

    (m) compiling, developing, publishing and distributing information of pertinence to the Show Cave industry.