Mount Recheshnoi (also spelled Recheschnoi) is a heavily eroded

stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...

located near the center of the SW lobe of

Umnak Island Umnak ( ale, Unmax, Umnax; russian: Умнак) is one of the Fox Islands of the Aleutian Islands. With of land area, it is the third largest island in the Aleutian archipelago and the 19th largest island in the United States. The island is home ...

in the

Aleutian Islands The Aleutian Islands (; ; ale, Unangam Tanangin,”Land of the Aleuts", possibly from Chukchi language, Chukchi ''aliat'', "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a cha ...

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S., ...

. The northeast flank of Recheshnoi has one of the hottest and most extensive thermal areas in Alaska. The Geyser Bight geothermal area consists of six zones of thermal springs and two

fumarolic A fumarole (or fumerole) is a vent in the surface of the Earth or other rocky planet from which hot volcanic gases and vapors are emitted, without any accompanying liquids or solids. Fumaroles are characteristic of the late stages of volcani ...

areas along upper Geyser Creek and contains the only known

geyser A geyser (, ) is a spring characterized by an intermittent discharge of water ejected turbulently and accompanied by steam. As a fairly rare phenomenon, the formation of geysers is due to particular hydrogeological conditions that exist only in ...

s in the state. In three locations in 1988 here have been found 5 active geysers up to 2 m high and 9 natural fountains up to 0.7 m high. Other thermal areas occur at Hot Springs Cove and Partov Cove on the isthmus between Recheshnoi and

Mount Okmok Mount Okmok is the highest point on the rim of Okmok Caldera (Unmagim Anatuu in Aleut) on the northeastern part of Umnak Island in the eastern Aleutian Islands of Alaska. This wide circular caldera truncates the top of a large shield volcano. The ...

. The most recent eruption of Mount Recheshnoi was on the flank of the volcano around 3,000 years ago.

References

External sources

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Volcanoes of the Alaska Peninsula and Aleutian Islands-Selected Photographs
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Alaska Volcano Observatory
Landforms of Aleutians West Census Area, Alaska Stratovolcanoes of the United States Mountains of Alaska Volcanoes of Alaska Potentially active volcanoes Aleutian Range Umnak Mountains of Unorganized Borough, Alaska Volcanoes of Unorganized Borough, Alaska {{AleutiansWestAK-geo-stub