Mount Shishaldin
| Mount Shishaldin | |
|---|---|
Mount Shishaldin, May 1994 | |
| Highest point | |
| Elevation | 9,373 ft (2,857 m) |
| Prominence | 9,373 ft (2,857 m) |
| Isolation | 877 km (545 mi) |
| Listing | |
| Coordinates | 54°45′21″N 163°58′03″W / 54.75583°N 163.96750°W |
| Geography | |
| Interactive map of Mount Shishaldin | |
| Location | Unimak Island, Alaska, U.S. |
| Parent range | Aleutian Range |
| Topo map | USGS False Pass D-6 |
| Geology | |
| Mountain type | Stratovolcano |
| Volcanic arc | Aleutian Arc |
| Last eruption | July 2023 to August 2024 |
| Climbing | |
| First ascent | May 16, 1932 by G. Peterson et al. (first recorded ascent) |
| Easiest route | East face:snow/glacier climb |
| Designated | 1967 |
Shishaldin Volcano, or Mount Shishaldin (/ʃɪˈʃældən/), is one of six active volcanoes on Unimak Island in the eastern Aleutian Islands of Alaska. It is the highest mountain peak of the Aleutian Islands, rising to a height of 9,373 ft (2,857 m) above sea level. Shishaldin's magma supply is generated via flux melting above the Aleutian Trench, where the Pacific Plate subducts beneath the North American Plate. Due to its remote location and frequently inclement weather, the Alaska Volcano Observatory (AVO) monitors the volcano remotely via satellite and a seismic network deployed in 1997. Shishaldin is one of the most active volcanoes in the Aleutian Islands, with 40 confirmed eruptions in the last 11,700 years. Notably, Shishaldin produced a sub-Plinian (VEI 3) eruption in 1999.