Beneath the surface of an otherwise unassuming National Park, a labyrinth showcases hundreds of millions of years of geologic history. Each shade of tan layered on the walls represents a different era ...
Students get hands-on lessons in geography, history, geology, and other subjects through the efforts of Mammoth Cave National Park and the Environmental Education Department. Kentucky Edition is ...
Mammoth Cave, the world's longest known cave system, stretches 426 miles under Kentucky. The cave's limestone began forming 330 million years ago when the region was submerged under an ocean. Visitors ...
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