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Global Volcanism Program | Image GVP-02370

Troitsky crater, the youngest of six craters at the summit of Kamchatka's Maly Semyachik volcano, was formed during a major explosive eruption about 400 years ago. The crater, seen here from the W with the Pacific Ocean in the background, is at the summit of Ceno-Semyachik. This is the youngest of the four overlapping stratovolcanoes that comprise the Maly Semyachik massif. The crater is now filled by a hot, acidic lake and has been the source of historical eruptions. Photo by Dan Miller, 1990 (U.S. Geological Survey).

Troitsky crater, the youngest of six craters at the summit of Kamchatka's Maly Semyachik volcano, was formed during a major explosive eruption about 400 years ago. The crater, seen here from the W with the Pacific Ocean in the background, is at the summit of Ceno-Semyachik. This is the youngest of the four overlapping stratovolcanoes that comprise the Maly Semyachik massif. The crater is now filled by a hot, acidic lake and has been the source of historical eruptions.

Photo by Dan Miller, 1990 (U.S. Geological Survey).

Keywords: crater | crater lake | stratovolcano


Maly Semyachik