Bezymianny (russian: Безымянный ''Bezymyannyyi'', meaning ''unnamed'') is an active

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 ...

in Kamchatka,

Russia Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...

. Bezymianny volcano had been considered extinct until 1955. Activity started in 1955, culminating in a dramatic eruption on 30 March 1956. This eruption, similar to that of

Mount St. Helens Mount St. Helens (known as Lawetlat'la to the indigenous Cowlitz people, and Loowit or Louwala-Clough to the Klickitat) is an active stratovolcano located in Skamania County, Washington, in the Pacific Northwest region of the United St ...

in 1980, produced a large horseshoe-shaped crater that was formed by collapse of the summit and an associated

lateral blast A lateral eruption or lateral blast is a volcanic eruption which is directed laterally from a volcano rather than upwards from the summit. Lateral eruptions are caused by the outward expansion of flanks due to rising magma. Breaking occurs at the ...

. Subsequent episodic but ongoing

lava dome In volcanology, a lava dome is a circular mound-shaped protrusion resulting from the slow extrusion of viscous lava from a volcano. Dome-building eruptions are common, particularly in convergent plate boundary settings. Around 6% of eruptions on ...

growth, accompanied by intermittent explosive activity and

pyroclastic flow A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ground away from a volcano at average speeds of bu ...

s, has largely filled the 1956 crater. The most recent eruption of lava flows occurred in February 2013. An explosive eruption on 20 December 2017 released an ash plume rising to a height of above sea level, which drifted for NE. The volcano erupted similarly on 28 May 2022, again spewing an ash plume over high. The modern Bezymianny volcano, much smaller than its massive neighbors

Kamen Kamen () is a town in North Rhine-Westphalia, Germany, in the district Unna. Geography Kamen is situated at the east end of the Ruhr area, approximately 10 km south-west of Hamm and 25 km north-east of Dortmund. Neighbouring cities, t ...

and

Kliuchevskoi Klyuchevskaya Sopka (russian: Ключевская сопка; also known as Klyuchevskoi, russian: Ключевской) is a stratovolcano, the highest mountain of Siberia and the highest active volcano of Eurasia. Its steep, symmetrical cone t ...

, was formed about 4700 years ago over a late-

Pleistocene The Pleistocene ( , often referred to as the ''Ice age'') is the geological Epoch (geology), epoch that lasted from about 2,580,000 to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was fina ...

lava-dome complex and an ancestral volcano that was built between about 11,000–7000 years ago. There have been three periods of intensified activity in the past 3000 years.

Gallery

File:ISS-38 Kliuchevskoi Volcano on Kamchatka.jpg, Annotated view includes

Ushkovsky Ushkovsky (russian: Ушковский, formerly known as Plosky) is a large volcanic massif located in the central part of the Kamchatka Peninsula, Russia. It is located at the northwestern end of the Klyuchevskaya Sopka volcano group. These vol ...

Tolbachik Tolbachik (russian: Толбачик) is a complex volcano, volcanic complex on the Kamchatka Peninsula in the far east of Russia. It consists of two volcanoes, Plosky (''flat'') Tolbachik (3,085 m) and Ostry (''sharp'') Tolbachik (3,682 m), whic ...

, Bezymianny,

Zimina Zimina volcano (russian: Вулкан Зимина) or Zimin is a stratovolcano located in the central part of the Kamchatka Peninsula, Russia. It comprises two peaks: Ovalnaya Zimina and Ostraya Zimina. View See also * List of volcanoes in ...

, and

Udina Udina (russian: Удина) is a volcanic massif located in the central part of the Kamchatka Peninsula, Russia. It comprises two conical stratovolcanoes: Bolshaya Udina (2,920 m) and Malaya Udina (1,945 m). The basaltic Malaya Udina rises above ...

. Oblique view taken on November 16, 2013 from ISS.NASA - Activity at Kliuchevskoi
/ref> Bezymianny can be seen 2nd from the right. A small plume of "smoke" can be seen. File:Bezymyannyi volcano.jpg, File:Bezymianny Volcano Natural Color.jpg, Natural-colour satellite image showing evidence of an eruption at the volcano.

References

External links

*
Bezymianny Volcano live webcam

Google Maps satellite image

* For its eruptive history, go to http://www.volcano.si.edu/volcano.cfm?vn=300250 and click on its tab marked "Eruptive History". Active volcanoes Volcanoes of the Kamchatka Peninsula Mountains of the Kamchatka Peninsula Subduction volcanoes VEI-5 volcanoes 20th-century volcanic events Stratovolcanoes of Russia Holocene stratovolcanoes Holocene Asia {{KamchatkaKrai-geo-stub