| Westdahl Volcano | |
| Elevation Ft: | 5426 |
| Elevation Ref: | [1] [2] |
| Prominence Ft: | 1365 |
| Map: | Alaska |
| Map Size: | 270 |
| Location: | Unimak Island,Alaska, USA |
| Range: | Aleutian Range |
| Coordinates: | 54.518°N -164.65°W |
| Topo: | USGS Unimak C-2 |
| Type: | Stratovolcano |
| Age: | Holocene |
| Volcanic Arc/Belt: | Aleutian Arc |
| Last Eruption: | 1991 to 1992 |
Westdahl Peak, also known as Westdahl Volcano or Mount Westdahl, is a stratovolcano of the Aleutian Range, in the U.S. state of Alaska. The volcano last erupted from November 29, 1991, to January 15, 1992.[3]
It is on Unimak Island, near the western tip of the Alaska Peninsula. The volcano has a second summit, called Faris Peak, which is actually the highest point at 5,426 feet (1,654 m).[4] Westdahl Peak currently has a summit elevation of 5,118 feet (1,560 m).
Other historical eruptions, all attributed to Westdahl by the Alaska Volcano Observatory, have been reported in 1795–1796, 1827–1829, 1951, 1964 and 1978. A couple eruptions were originally reported to be from nearby Pogromni Volcano, but the peak is old, eroded and most likely hasn't erupted since Pleistocene time.[5]