Mount Okmok

Mount Okmok is a shield volcano located in the Aleutian Islands with a large caldera at its summit. This caldera contains several cinder cones and small lakes scattered across its basin.

The volcano experienced a major eruption approximately two thousand years ago that dispersed ash across vast distances. More recent activity occurred in the early 2000s, reflecting ongoing geological processes beneath the island.

The Aleut people named the caldera Unmagim Anatuu and established settlements near the volcano, utilizing the natural resources of the surrounding landscape.

The location is remote and requires careful planning to visit, as it can only be reached by chartered flights and boats from nearby settlements. Visitors should prepare for harsh conditions including strong winds and frequent fog that can affect travel and visibility throughout the year.

The caldera floor contains active vents that regularly release gases affecting local air quality in ways scientists continue to study. These ongoing geological processes make it a living laboratory for understanding how shield volcanoes behave over time.

Location: Alaska

Elevation above the sea: 1,073 m

GPS coordinates: 53.39694,-168.16611

Latest update: December 7, 2025 20:22