| Mount Kaguyak | |
|---|---|
Lake filled caldera of Kaguyak, August 1982. |
|
| Elevation | 2,956 ft (901 m) |
| Location | |
| Location | Katmai National Park and Preserve, Alaska Peninsula, USA |
| Range | Aleutian Range |
| Geology | |
| Type | Stratovolcano |
| Volcanic arc/belt | Aleutian Arc |
| Last eruption | 5800 BP [1] |
Mount Kaguyak is a stratovolcano located in the northeastern part of the Katmai National Park in Alaska. The 2.5 km wide caldera is filled by a more than 180 m deep crater lake. The surface of the crater lake lies about 550 m below the rim of the caldera. Postcaldera lava domes form a prominent peninsula in the center of the lake. Even though the volcano is only 901 m high it is spectacular, because it rises from lowland areas near sea level in the south of the Big River. Based on radiocarbon dating the caldera-forming eruption occurred about 5800 years before present [2]. During this eruption at least 120 square kilometers were covered in a dacitic ignimbrite [3].