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Old Faithful is a cone geyser in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn–Langford–Doane Expedition and was the first geyser in the park to be named. [3] [4] It is a highly predictable geothermal feature and has erupted every 44 minutes to two hours since 2000. [5]
Opal Pool is a hot spring in the Midway Geyser Basin of Yellowstone National Park, Wyoming.Opal Pool usually has a temperature of approximately 132 °F (56 °C). [1] Though usually active as a hot spring, Opal Pool is considered a fountain-type geyser.
Black Sand Basin is one of a grouping of geothermal hot springs and geysers located in the Upper Geyser Basin of Yellowstone National Park, Wyoming. [1] [2] The spring is too hot to use as a mineral bath as its scalding 200 °F (93 °C) or hotter water has proven to be fatal. [2]
Doublet Pool is a hot spring in the Upper Geyser Basin of Yellowstone National Park, Wyoming. Doublet Pool is 8 feet (2.4 m) deep and its temperature is approximately 194.4 °F (90.2 °C). [3] Its scalloped edge is made of geyserite. Eruptions can occur in Doublet Pool, but only last up to 8 minutes.
Yellowstone National Park, Teton County, Wyoming, USA Coordinates 44°28′30″N 110°50′37″W / 44.4750325°N 110.8435128°W / 44.4750325; -110.8435128
Lower Geyser Basin, Yellowstone National Park, Teton County, Wyoming Coordinates 44°33′00″N 110°49′03″W / 44.5499335°N 110.8174332°W / 44.5499335; -110.8174332
Echinus is the largest acid-water geyser in the world. Its waters have a pH of 3.3 to 3.6, nearly as acidic as vinegar . [ 4 ] The water temperature is 80.3 °C (176.5 °F).
Sawmill Geyser, named for the whirring sound it makes during its eruption, is a geyser in Yellowstone National Park, Wyoming, United States. The geyser was named by Antoine Schoenborn of the Hayden Geological Survey of 1871 .