Mammoth Cave - the longest cave in the world (Kentucky)

Rolling hills, deep river valleys, and the worlds longest known cave system. Mammoth Cave National Park is home to thousands of years of human history and a rich diversity of plant and animal life, earning it the title of UNESCO World Heritage Site and International Biosphere Reserve. Additional audio and footage by: National Park Service Untold to the Unforgettable - African American Heritage in Kentucky My Old Kentucky Home - NPS/Chuck DeCroix Lia Nydes, Center for Environmental Filmmaking Introduction Video