Alney-Chashakondzha
Central Kamchatka Volcanic Arc, Russia. This page separates the permanent volcano catalogue, historical eruption records, and selective weekly activity reports.
- Coordinates
- 56.66° N, 159.65° E
- Elevation
- 2,570 m
- Last recorded eruption
- 1600 CE
- Historical eruption records
- 3
- Primary type
- Stratovolcano
- Evidence
- Eruption Dated
- GVP database
- 5.4.0
- Catalogue revision
- Revision 2
Volcano profile
- Volcanic landform
- Composite
- Tectonic setting
- Subduction zone / Continental crust (> 25 km)
- Geologic epoch
- Holocene
- Major rock type
- Basalt / Picro-Basalt
- Region
- Northwestern Pacific Volcanic Regions
- Subregion
- Central Kamchatka Volcanic Arc
Geological summary
The glacier-capped Alney-Chashakondzha complex, one of the largest volcanoes of the Sredinny Range, consists of two large mostly Pleistocene andesitic stratovolcanoes constructed on a large Pliocene shield volcano. Both Alney on the north and Chashakondzha on the south are capped with andesitic lava domes. Three rhyodacitic-to-rhyolitic lava domes and associated lava flows were emplaced along ring faults enclosing a 15 x 20 km area. Two cinder cones on the east flanks of Alney and Chashakondzha erupted about 2600 years ago and produced lava flows, one of which traveled as far as 9 km. Alney is one of the few large stratovolcanoes in the Sredinny Range known to have been active throughout the Holocene, with more than 30 documented pyroclastic deposits. The last intense eruption took place about 350 years ago.
Separate activity dataset
Weekly volcanic activity reports
Smithsonian/USGS weekly reports are selective and preliminary. They are not a comprehensive list of all eruptions or volcanic activity.
No weekly report appears on this page. Absence from the weekly report does not establish an absence of volcanic activity.
Historical catalogue records
Eruption history
Dates can be approximate, incomplete, or BCE. These are historical catalogue observations, not a statement about present activity.
| Start | End | Activity | Confirmation | VEI | Evidence | Record |
|---|---|---|---|---|---|---|
| ? 1600 CE | Not supplied | Confirmed EruptionAlney volcano | Confirmed | Not supplied | Isotopic: 14C (uncalibrated) | GVP 19607Database 5.4.0 |
| 651 ±75 years BCE | Not supplied | Confirmed EruptionEast flank of Alney (Kireunsky) | Confirmed | 3 | Isotopic: 14C (uncalibrated) | GVP 19606Database 5.4.0 |
| 661 ±75 years BCE | Not supplied | Confirmed EruptionE of Chashakondzha (Levaya Belaya) | Confirmed | 3 | Isotopic: 14C (uncalibrated) | GVP 19605Database 5.4.0 |
Source and attribution
Source: Data: Smithsonian Institution Global Volcanism Program, Volcanoes of the World.
View the original Smithsonian GVP recordGlobal Volcanism Program, 2026. Volcanoes of the World 5.4.0.
The GVP database is scientific documentation that changes as evidence is reviewed. Historical dates may be approximate or uncertain. This platform is not an official emergency-warning service.
Read the GVP terms of useData freshness
- Source updated
- Not supplied
- Retrieved
- 11 Oct 2026, 13:07 UTC
- GVP database version
- 5.4.0
- Catalogue revision
- 2
Source-update and retrieval times describe this catalogue record. Each weekly report carries its own publication date and preliminary status.