Explore up to ten miles of the incredible Mammoth Cave! With more than 400 miles (644 km) of mapped passageways, Mammoth Cave ranks as the world's longest known cave system. Mammoth Cave National Park was established in 1941, designated a World Heritage Site in 1981 and became the core area of an International Biosphere Reserve in 1990.  

Mammoth Cave National Park preserves the cave system and a part of the Green River valley and hill country of south central Kentucky. Early guide Stephen Bishop called the cave a "grand, gloomy and peculiar place" but its vast chambers and complex labyrinths have earned it the name Mammoth. The park offers a variety of cave tours daily (except Christmas Day). Mammoth Cave tours are available year-around, up to 6 months in advance.  

The park may not publish the complete schedule or variety of tours until 1 to 3 months prior to tour date. All tours begin and end at the Visitor Center. Tours range from easy to difficult and may last anywhere from one to six hours. Cave trails and walkways may have electric lights or may be rugged, pitch-dark paths that require visitors to carry a lantern.   

Take a little time to ensure the activity you choose is the best one for you. Each tour is fascinating in its own way and shows off the various sections of the cave. Tour highlights include the Rainbow Dome, the Snowball Room, Crystal Lake, and the Bottomless Pit. Please note the Self-Guided tour is usually only offered during the busier times of the year of summer and fall. The park also offers free programs on the surface that do not require reservations.