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Yellowstone National Park

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.

The YVO 2023 Annual Report Has Hit The Streets!

Every year since 2017, the Yellowstone Volcano Observatory has summarized yearly geological activity—earthquakes, ground deformation, geyser eruptions, and so forth—and research efforts and findings in a series of annual reports. In these products you can find information about the numbers of seismic swarms in a given year, or the progress made on geologic mapping and dating of Yellowstone deposits, and even the thermal emissions from Yellowstone National Park as detected by satellites.

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

The Essential RVing Guide to the National Parks

Here’s the definitive guide to National Park System campgrounds where RVers can park their rigs.

Our app is packed with RVing- specific details on more than 250 campgrounds in more than 70 national parks.

You’ll also find stories about RVing in the parks, tips helpful if you’ve just recently become an RVer, and useful planning suggestions.

The Essential RVing Guide to the National Parks

FREE for iPhones and Android phones.