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Sheepeater Cliff is made up of columnar basalt deposited by lava flows roughly 500,000 years ago. The Gardner River flows through the valley, exposing the flow and forming the cliff. The basalt of Sheepeater Cliff are known as columnar basalt due to the hexagonal fracture lines that formed in the basalt when it cooled.
At Madison Junction, you'll find a campground, restroom facilities, an information...
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Exploring Mammoth'swhite travertine terraes is a bit like stepping out...
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Located at the boundary between Yellowstone National Park and the...
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Roaring Mountain is a large, acidic thermal area (solfatara) that...
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The Grand Canyon of the Yellowstone River expresses the park's...
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Don't pass by Yellowtone's oldest and hottest geothermal basin! Norris...
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Along Fountain Paint Pot Trail you will see various hydrothermal...
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