In the southeastern state of Kentucky, you will find rolling hills and thick green forests.
But beneath the land is a strange and silent underground world. One early explorer described it as “grand,” “gloomy” and “peculiar.”
Welcome to Mammoth Cave National Park!
Mammoth Cave is the longest known cave system in the world. It is two times as large as the world’s second-biggest cave system. Its size helped give it its name. Mammoth as an adjective means “extremely large.”
Mammoth Cave National Park is in Kentucky’s Green River valley. The park covers over 20,000 hectares. It protects the river valley and hilly land, as well as the vast underground cave system.
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