Bezymianny is an active stratovolcano in Kamchatka, Russia. 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 1980 eruption of Mount St. Helens, produced a large horseshoe-shaped crater that was formed by collapse of the summit and an ass…Bezymianny is an active stratovolcano in Kamchatka, Russia. 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 1980 eruption of Mount St. Helens, produced a large horseshoe-shaped crater that was formed by collapse of the summit and an associated lateral blast. Subsequent episodic but ongoing lava dome growth, accompanied by intermittent explosive activity and pyroclastic flows, 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 15 kilometres above sea level, which drifted for 320 kilometres NE. The volcano erupted similarly on 28 May 2022, again spewing an ash plume over 15 kilometres high. On April 7, 2023, Russia reported Bezymianny had erupted explosively again and the Federal Agency for Air Transport, Rosaviatsiya, issued a Notice to Airmen and raised the aviation Color Code Red. The eruption formed a column of ash that rose to a height of 12 kilometres and was drifting to the southeast slowly. The ash plume stretched out across a distance of 2,000 kilometres.
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