Old Faithful is a cone geyser located in Wyoming, in Yellowstone National Park in the United States. Take a look at the following public domain photos of Old Faithful. The geyser was named in 1870 during the Washburn-Langford-Doane Expedition and was the first geyser in the park to receive a name. The geyser, as well as the nearby Old Faithful Inn, is part of the Old Faithful Historic District.
Eruptions of the Old Faithful can shoot 3,700 to 8,400 U.S. gallons (14–32.000 litre) of boiling water to a height of 106–185 feet (30–56 m) lasting from 1.5 to 5 minutes. The average height of an eruption is 145 feet (44 m). The highest recorded eruption was 185 feet (56 m) high. Eruptions often occur about 90 minutes apart, but this interval can range from 45 to 125 minutes on occasion.
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