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This national park is home to the longest cave in the world—and only 426 miles have been explored so far
Here’s how to plan a trip to Mammoth Cave National Park.
Those who live in the area around Mammoth Cave National Park have probably heard that it is is home to the longest cave system in the world and has a history that dates back thousands of years. The ...
Add Yahoo as a preferred source to see more of our stories on Google. On many days in Kentucky when the air is still, whiffs of dirty air, drifting from distant pollution sources, can be seen high in ...
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