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Old Faithful Geyser |
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United States Atlas > Travel Photos | Old Faithful |
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Old Faithful Geyser is located in the Upper Geyser Basin of Yellowstone
National Park in Wyoming. The Washburn Expedition of 1870, the first
official expedition to Yellowstone, named it for its regular eruptions;
it averages nearly one per hour, with intervals ranging from 35-120
minutes. Old Faithful's eruptions result from an underground buildup
of high-pressure, boiling water. The steaming liquid eventually
forces its way to the surface and out through a mineral cone. The
geyser then sputters and bubbles for about ten minutes before spraying
3,700 to 8,400 gallons of water high into the air. While eruptions
at Old Faithful are usually about 130 feet high, they can reach heights
of more than 180 feet.
 Old Faithful
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Old Faithful Geyser - Yellowstone National Park |
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