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Early explorers to Yellowstone described this features as a “most repulsive and terrifying site.” It is a volcano-like cone, 30 by 30 feet high and wide (9 x 9 m) with mud that erupts and covers tall trees. When Nathaniel P. Langford, the first superintendent of Yellowstone, visited in 1870, he saw “a seething, bubbling mass of mud.” It is likely a violent eruption blew out the cone’s side, leaving the crater you see today. The water constantly undercuts the back wall and is rich in iron sulfides.
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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