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Parks in the News

Solving The Mystery Of The "Pearlette Volcanic Ash"

In the late 1800s, geologists studying the Great Plains region of the United States puzzled over strange deposits. For example, a "white, flour-like earth" in Nebraska. Although initially thought to be from nearby hot springs, under the microscope it was determined that these deposits, which could be found across the region, were from volcanic ash that had rained down from some huge prehistoric eruption.

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The easiest way to explore RV-friendly National Park campgrounds.

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