Anyuyskiy
mountain in Russia
Anyuyskiy (Russian: Анюйский Вулкан; Annuyskiy Vulkan) is an extinct volcano in the Anyuy Mountains, Chukotka Autonomous Okrug, Far Eastern Russia. It is formed by two systems: one is formed by long lava flows which disrupted the valley of the Monni River. Later, a volcanic cone formed, experiencing explosive activity and eventually extruding a long lava flow.
The volcano erupted more than one cubic kilometre of lava. It was considered to have been active during the 14th and 18th centuries, but radiometric dating has shown ages of almost 250,000 years ago.
The volcano is also known as Molodykh, Monni and Ustieva. Anyuyskiy was discovered in 1952 on aerial images.
Geology
Anyuyskiy is in the valley of the Monni River, in the southern Anyuy Mountains, part of the East Siberian System. Late Quaternary volcanic activity appears to be linked to tectonic activity in the area. A change in volcanic activity from linear vents to central vents has been noted.
Begin with the source’s own compact description: “Anyuyskiy” is mountain in Russia. The dossier treats that line as a proposition to test through Anyuyskiy, mountain and Russia, not as a finished interpretation.
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The phrase “mountain in Russia” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Maps, plans, fabric surveys and administrative records can establish how the site’s name, extent and function changed over time. The source revision retrieved here is dated Aug 10, 2026. The linked authority identifier is Q4778372. Authority coordinates are 67.096, 165.315. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1952.
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This entry incorporates text from “Anyuyskiy” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.