What the records say
- When
- 1790 BCE
- Kind
- Volcanic eruption
- Coordinates
- 58.35° N, 155.09° W
- Date uncertainty
- ± 40 years
- Dated by
- Isotopic: 14C (calibrated)
- Volcano number
- 312190
- Eruption number
- 20246
Mount Griggs
Stratovolcano in the state of Alaska
Mount Griggs, formerly known as Knife Peak Volcano, is a stratovolcano, which lies 10 km behind the volcanic arc defined by other Katmai group volcanoes. Although no historic eruptions have been reported from Mount Griggs, vigorously active fumaroles persist in a summit crater and along the upper southwest flank.
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The source
- Smithsonian GVP Volcanoes of the World: Holocene eruptionsGlobal Volcanism Program, Smithsonian InstitutionSmithsonian terms of use: personal, educational and non-commercial use, with creditGlobal Volcanism Program, Smithsonian Institution: Volcanoes of the World v5.3, https://doi.org/10.5479/si.GVP.VOTW5-2025.5.3Source page