Mountains for hikers & skiersHome › Top US peaks › Alaska
Mountains for hikers & skiersAlaska peak
| State | Alaska |
|---|---|
| Elevation | 7,657 ft (2,334 m) |
| Prominence | 7,300 ft (2,225 m) — an ultra-prominent peak |
| Range | Aleutian Range |
| Protected area | Katmai National Park and Preserve |
Source: Wikidata Q826942 (elevation, prominence, range, protected area, first ascent).
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. The fumaroles on the southwest flank are the hottest, and some of the flank fumaroles can roar so loudly that they can be heard from the valley floor. The slopes of Mount Griggs are heavily mantled by fallout from the 1912 eruption of Novarupta volcano. The summit consists of three concentric craters, the lowest and largest of which contains a recent summit cone topped by two craters. The volume of the volcanic edifice is estimated at 25 cubic kilometers (6.0 cu mi). Isotopic analysis indicates that the source of Griggs' magma is distinct from the other Katmai volcanoes.
Summary from Wikipedia (CC BY-SA 4.0).
Straight-line distance between Wikidata summit coordinates.
Wikidata Q826942; Wikipedia; Wikimedia Commons; state from U.S. Census Bureau 2023 cartographic boundaries. Always check current conditions and land-manager rules before you go.
