Bezymianny
The Original Lateral Blast Volcano
2,882 m
2025
Stratovolcano
Russia
Location
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Volcanic Hazards & Risk Assessment
Primary Hazards
- Pyroclastic flows
- Lava flows
- Volcanic bombs and ballistics
- Lahars and mudflows
Risk Level
Geological Composition & Structure
Rock Types
Tectonic Setting
Age & Formation
Eruption Statistics & Analysis
| Metric | Value | Global Ranking | Significance |
|---|---|---|---|
| Total Recorded Eruptions | Unknown | Low | Moderately active volcano |
| Maximum VEI | VEI Unknown | Minor | Local impact potential |
| Recent Activity | 1 years ago | Very Recent | Currently active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Authority Sources
Other Volcanoes in Russia
- Avachinsky
Stratovolcano
- Chikurachki
Stratovolcano
- Gorely Volcano
Caldera
- Karymsky
Stratovolcano
Interesting Facts
Bezymianny's name means 'Nameless' in Russian — given because scientists classified it as extinct and too insignificant to deserve a proper name.
The 1956 lateral blast devastated approximately 500 km² of forest, traveling at speeds exceeding 300 km/h — a nearly identical precursor to the 1980 Mount St. Helens eruption.
The term 'Bezymianny-type eruption' is now standard volcanological terminology for directed blast eruptions preceded by sector collapse.
The volcano has erupted 71 times since reawakening in 1955 after approximately 1,000 years of dormancy.
The 1956 eruption column reached approximately 35 km into the stratosphere — among the highest eruption columns documented in the 20th century.
The sector collapse in 1956 removed approximately 200 m from the summit, reducing the volcano's height from ~3,100 m to ~2,900 m.
Bezymianny produces paroxysmal explosive eruptions roughly 1–4 times per year, making it one of the most frequently exploding volcanoes on Earth.
The growing lava dome within the 1956 crater has nearly refilled the collapse scar after nearly 70 years of near-continuous growth.
Despite its extraordinary level of activity, Bezymianny has caused zero known fatalities — thanks entirely to its extreme remoteness in the Kamchatka wilderness.
Bezymianny is dwarfed by neighboring Klyuchevskoy (4,754 m), Eurasia's tallest active volcano, which stands just 10 km to the north.
Soviet volcanologist Georgy Gorshkov's documentation of the 1956 eruption became foundational literature that helped scientists worldwide understand directed-blast volcanic hazards.
The volcano lies beneath the North Pacific air corridor connecting North America with Asia, making its frequent ash emissions a persistent aviation hazard.