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The Smithsonian is closed due to a United States federal government shutdown. Global Volcanism Program staff are out of the office and unable to maintain this site until further notice. The Smithsonian / USGS Weekly Volcanic Activity Reports are suspended because USGS staff have also been furloughed.


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

  • Volcano

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.

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.

Eruptive History

There is data available for 3 Holocene eruptive periods.

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)
Deformation History

There is no Deformation History data available for Edgecumbe.

Emission History

There is no Emissions History data available for Edgecumbe.

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.
GVP Map Holdings

The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.

Title: Canada, United States
Publisher: DMA Aerospace Center
Country: United States, Canada
Year: 1989
Series: ONC
Map Type: Topographic
Scale: 1:1,000,000
Map of Canada, United States

Title: Port Alexander
Publisher: US Geological Survey
Country: United States
Year: 1977
Series: AK Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of Port Alexander

Title: Sitka
Publisher: US Geological Survey
Country: United States
Year: 1970
Series: AK Topo 250
Map Type: Topographic
Scale: 1:250,000
Map of Sitka
Smithsonian Sample Collections Database

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

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