Edgecumbe

Photo of this volcano
  • United States
  • Alaska
  • Stratovolcano(es)
  • 2220 BCE
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 57.05°N
  • 135.75°W

  • 970 m
    3182 ft

  • 315040
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Edgecumbe.

The Global Volcanism Program has no Weekly Reports available for Edgecumbe.

The Global Volcanism Program has no Bulletin Reports available for Edgecumbe.

Eruptive History


Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
2220 BCE ± 100 years Unknown Confirmed   Radiocarbon (uncorrected)
3810 BCE ± 75 years Unknown Confirmed   Radiocarbon (uncorrected)
7220 BCE ± 150 years Unknown Confirmed   Radiocarbon (uncorrected)

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery


The Pleistocene-to-Holocene Mount Edgecumbe volcanic field covers about 260 sq km of Kruzov Island west of Sitka in the SE panhandle of Alaska. This aerial view shows colorful slopes of oxidized scoria on Crater Ridge in the foreground, with an unnamed crater in the background. Crater Ridge is truncated by a 1.6-km-wide, 240-m deep caldera. The youngest eruptions from Mount Edgecumbe are about 4000 years old. Mount Edgecumbe itself, a 967-m-high stratovolcano with a well-defined crater, is the largest volcano of the Edgecumbe field.

Photo by Jim Riehle (U.S. Geological Survey, Alaska Volcano Observatory).
See title for photo information.

Smithsonian Sample Collections Database


There are no samples for Edgecumbe in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites