Mammoth Cave National Park

a national park in central Kentucky: limestone caverns with onyx formations, stalagmites, and stalactites. 79 sq. mi. (205 sq. km).

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National park, southwest-central Kentucky, U.S. The park, authorized in 1926 and established in 1941, occupies a surface area of 82 sq mi (212 sq km) that covers a system of limestone caverns.

In 1972 a passage was discovered linking the Mammoth Cave and the Flint Ridge Cave System; the explored underground passages have a combined length of some 329 mi (530 km). The caves are inhabited by various animals that have undergone evolutionary adaptation to the dark, including cave crickets, blindfish, and blind crayfish. Mummified Indian bodies, possibly of pre-Columbian origin, have been found in the caves.

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national park containing an extensive system of limestone caverns (cave), in west-central Kentucky, U.S.; it was designated a World Heritage site in 1981. The park, authorized in 1926 but fully established only in 1941, occupies a surface area of 83 square miles (215 square km). In 1972 a passage was discovered linking the Mammoth Cave and the Flint Ridge Cave System, which also is within the national park. The explored and mapped underground passages of the multilevel system have a combined length of more than 345 miles (555 km), making it the longest cave system in the world. The caves were formed by the dissolution of limestone by water, a continuing process; their natural temperature is 54° F (12° C), with a relative humidity of a high 87 percent. They contain underground lakes and rivers and numerous unique geologic formations, including stalactites and stalagmites—to which descriptive names, such as Pillars of Hercules or Frozen Niagara, have been given. To the caves' large natural entrance have been added several artificial ones (including access by elevator), and a number of scenic tours through the caverns have been laid out for visitors.

      The subterranean passages are inhabited by various animals that have undergone evolutionary adaptation to the dark environment, including cave crickets, eyeless fish, and eyeless crayfish. Also found within the caves are fungi or related species.

      The mummified bodies of some American Indians, possibly of pre-Columbian origin, have been found in Mammoth Cave. During the War of 1812 the cave was mined for nitrates for use in making gunpowder, and it was later used as a tuberculosis hospital.

      The park's aboveground area is mostly covered with hardwood forest. The Green and Nolin rivers meander across the park's hilly surface. White-tailed deer, foxes, opossums, squirrels, and rabbits, together with bats, reptiles, and birds, including reintroduced wild turkeys, are some of the animal species inhabiting the park. Canoeing, fishing, hiking in the forests, and camping, in addition to visiting the caves, are popular activities.

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Universalium. 2010.

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