About Ostry
Ostry is a stratovolcano rising to 2,552 meters (8,373 feet) in Russia's Northwestern Pacific Volcanic Regions. The volcano is currently active, with its most recent eruption in 2050 BCE. The volcano has produced 1 recorded eruption.
Geography & Climate
Ostry is located in Russia, within the Central Kamchatka Volcanic Arc of the broader Northwestern Pacific Volcanic Regions. Situated at 58.18° N, 160.82° E in the Northern Hemisphere, the volcano lies within a subarctic climate zone. At 2,552 meters above sea level, Ostry rises above the surrounding terrain into montane or subalpine conditions. The elevation creates distinct ecological zones along its flanks, from forested lower slopes to exposed rocky terrain near the summit. The volcanic landform is characterized as a composite, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
Geological Context
Ostry sits in a subduction zone, where one tectonic plate dives beneath another, creating intense heat and pressure that generates magma. Subduction zones are responsible for many of the world's most explosive volcanoes and deadliest eruptions. For communities in Russia near Ostry, this tectonic setting means the volcano is capable of producing powerful explosive eruptions, pyroclastic flows, and lahars that can threaten populated areas within tens of kilometers of the summit. The dominant rock type is basalt / picro-basalt, a dark, fine-grained volcanic rock that forms from rapidly cooling, low-viscosity lava. Basaltic eruptions tend to be less explosive and produce fluid lava flows that can travel long distances. While less immediately dangerous than explosive eruptions, basaltic lava flows can destroy structures and infrastructure in their path, and volcanic gases released during these eruptions can affect air quality over a wide area.
Eruption History Summary
Ostry has 1 recorded eruption in the geological database, spanning from 2050 BCE to 2050 BCE.
GVP Reference Summary
Conical Ostry volcano (also known as Ostraya) is a late-Quaternary stratovolcano on the western side of the major NE-trending graben along the axis of the northern Sredinny Range. An unnamed cinder cone on the SW flank, informally referred to as "Cone X," erupted about 4,000 years ago, producing a basaltic lava flow.
— Smithsonian Institution, Global Volcanism Program
1 Recorded Eruption
| Year | VEI | Type | Area |
|---|---|---|---|
| 2050 BCE | — | Confirmed Eruption | SW flank cinder cone |
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Ostry
Is Ostry an active volcano?+
Ostry is not currently classified as active. Its activity evidence is listed as "Eruption Dated." The last known eruption was in 2050 BCE. However, no volcano is ever considered permanently extinct.
When did Ostry last erupt?+
The most recent recorded eruption of Ostry occurred in 2050 BCE. The eruption was classified as a "Confirmed Eruption." Ostry has 1 recorded eruption in total.
How high is Ostry?+
Ostry has a summit elevation of 2,552 meters (8,373 feet) above sea level. At 2,552 meters, it is comparable in height to many significant mountain peaks and stands well above the tree line.
What type of volcano is Ostry?+
Ostry is classified as a Stratovolcano. Stratovolcanoes (also called composite volcanoes) are steep, conical volcanoes built up by many layers of hardened lava, tephra, and volcanic ash. They are among the most common and dangerous types, known for explosive eruptions.
Where is Ostry located?+
Ostry is located in Russia, in the Northwestern Pacific Volcanic Regions. More specifically, it lies within the Central Kamchatka Volcanic Arc. Its exact coordinates are 58.180° latitude, 160.820° longitude.
Is it safe to visit Ostry?+
Ostry can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. Russia may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.
