Huckleberry Ridge Tuff
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The Huckleberry Ridge Tuff is a tuff formation created by the Huckleberry Ridge eruption that formed the Island Park Caldera that lies partially in Yellowstone National Park, Wyoming and stretches wes
The Huckleberry Ridge Tuff along the Gardner River near Osprey Falls, above Mammoth
Huckleberry Ridge ash bed
Yellowstone National Park
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Yellowstone National Park is a national park of the United States located in the northwest corner of the state of Wyoming, with small portions of it extending into Montana and Idaho. It was establishe
Grand Canyon of the Yellowstone
Exposed rock at Obsidian Cliff
Colter's Hell near Cody, Wyoming, one of the first geothermal sites to be spotted by mountain men
Hayden Geological Survey at Yellowstone Lake. Illustration by William Henry Jackson, 1871