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Explorers add 8 miles to the longest known cave system in the world

The world’s longest known cave system just set a new record after investigators spent hours mapping an additional eight miles (13 km) of the Mammoth Cave National Park walkway in Kentucky. ..

According to the National Park Service (NPS), the mammoth cable corridor is now 420 miles (676 km) long. This is the distance between New York City and Raleigh, North Carolina.

Explorers add 8 miles to the longest known cave system in the world

Source link Explorers add 8 miles to the longest known cave system in the world

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