Mammoth Cave National Park, Kentucky 06/24/2021
Автор: Daliwoods
Загружено: 2021-06-24
Просмотров: 170
Since the 1972 unification of Mammoth Cave with the even-longer system under Flint Ridge to the north, the official name of the system has been the Mammoth–Flint Ridge Cave System. The park was established as a national park on July 1, 1941, a World Heritage Site on October 27, 1981, and an international Biosphere Reserve on September 26, 1990.
The park's 52,830 acres (21,380 ha) are located primarily in Edmonson County, with small areas extending eastward into Hart and Barren counties. The Green River runs through the park, with a tributary called the Nolin River feeding into the Green just inside the park. Mammoth Cave is the world's longest known cave system with more than 400 miles (640 km) of surveyed passageways,[3][4] which is nearly twice as long as the second-longest cave system, Mexico's Sac Actun underwater cave.[5]
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