If you are interested in learning more about caves and caving, the National Speleological Society is a good place to start. For a list of their local chapters and contact information, click the logo to the left and you will be taken to their home page.       Beyond Mammoth Cave tells two parallel, but converging stories: 1) The discovery of Roppel Cave and its exploration through 1983, when it was connected to the Mammoth Cave system, and 2) The continuing explorations from 1972 through 1983 by the Cave Research Foundation in the Mammoth Cave System This book can be ordered from Cave Books or from your favorite book seller.     The Longest Cave chronicles the modern era of the exploration of the caves of Flint Ridge and Mammoth Cave from the mid 1950's up to the connection of the Flint Ridge cave system to Mammoth Cave in 1972. This book can be ordered from Cave Books or from your favorite book seller.     The Caves Beyond is the story of the 1954 C-3 Expedition in Floyd Collins Crystal Cave and the beginning of the era of organized, intensive exploration in the cave systems of the Mammoth Cave region. This book can be ordered from Cave Books or from your favorite book seller.     Roger Brucker's web site. Learn more about what Roger is up to these days here.     The Cave Research Foundation home page. Information about membership, fellowships, research grants and current projects.     Here's an opportunity to get involved in a great volunteer project in Mammoth Cave several times a year.     The National Park Service web site is only partially up right now.