Jeanne Gurnee


Protection of the unusual features in some of the 200 show caves of the U.S. have required innovative management. The sea caves of both the east and west coasts present the need for special preservation methods. Throughout the nation sometimes glass enclosures, vehicles and boats are used to separate visitors from sensitive cave features. Lighting and cleaning techniques have been studied and altered to discourage growth of algae. Some show caves are protected by double glass entrance and exit doors. Many caves, particularly on public lands, are closed during the hibernation period of endangered bats. In a number of caves, Native Americans have left artifacts and other evidences of their early visits. which have either been preserved in situ or relocated at appropriate archival sites. The paper gives in more details specific caves and methods for the preservation of particular unique features.