The dense forests of Kentucky hide a cave system of more than 330 miles of known passages on five levels. It is called the most extensive cave system in the world and the main attraction of one of the greatest cave regions with its giant vertical shafts, underground rivers and rare animals, including white spiders, blind beetles, and eyeless fish. A rare treat both above and below the ground are found at this World Heritage Site and International Biosphere Reserve.

Visit the Mammoth Cave National Park Forum to ask questions about the park.