Bison at Wind Cave National Park, South Dakota, USA
© Newman Mark/SuperStock
Bison at Wind Cave National Park, South Dakota, USA
Hidden below the prairie at Wind Cave National Park, you’ll find something unexpected: one of the longest caves on the planet. This site includes 140 miles of explored passageways, making it the sixth-longest cave in the world and the first cave to ever be established as a national park. What’s above ground is equally special. The prairie supports one of the most genetically pure herds of bison in the United States.
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