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Bluespring Caverns

Over 50 smaller streams contained in 18+ miles of known passages combine in the main river passage to create America's longest navigable underground river. Living in the miles of flowing streams are rare blind cavefish and blind crayfish. Passengers on the custom electric tour boats can usually sight some of these unusual creatures as they float though the winding passages.

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Seneca Caverns Registered Natural Landmark

Seneca Caverns is one of Ohio's largest underground caverns, and one of America's most fascinating geological wonders. Because it is so unique it is often referred to as "The Caviest Cave in the USA".

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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.

About the NCA

The National Caves Association is a non-profit trade association founded in 1965 by a small group of private show cave owners.  These initial members sought to bring together show cave owners and operators from across the United States to promote the show cave industry to the public, to share information and ideas, and to lobby for legislation favorable to the show cave industry.

Over the years the Association has become more than an industry trade organization, it has become an association of friends and colleagues willing to share ideas and information and to lend a helping hand when needed.  The membership has grown from those few early members to over 80 show caves located across the U.S., Bermuda and Barbados.

For the past 50 years members of the Association have gathered at different locations across the United States and Bermuda for an annual convention.  It is during the annual convention that the members renew old acquaintances, make new friends, share ideas, information and experiences, and learn from one another about the challenges and triumphs and the failures and successes of operating a show cave.  The annual convention is one of the most eagerly anticipated events of the year and for many members the greatest benefit of membership.

The National Caves Association has been very active in promoting cave visitation, developing affordable cave insurance programs, helping develop and implement industry standards on alpha radiation in caves, educating the public on White Nose Syndrome (WNS), a sometimes fatal illness that has decimated large parts of bat populations in the eastern United States, and has become a repository of information on a wide variety of topics related to the show cave industry.