58.62 N, 154.05 W
summit elevation 901 m
Kaguyak volcano is located in NE Katmai National Park, 375 km SW of Anchorage, Alaska.
Kaguyak volcano contains a 2.5-by-3-km-wide lake-filled caldera. The volcano contains nine lava domes. One dome is located in the centre of the lake and two domes are located on SW lake shore.
The volcano has produced holocene explosive eruptions, two post-caldera domes, and continued gas bubbling through the 150-m-deep caldera lake.
The eastern edifice was built between 60,000 and 300,000 years ago, and formed by eruption from a single magma reservoir.
The southern caldera wall consists of two thick lava coulees. The southern edifice was destroyed during caldera collapse. The edifice was constructed about 30,000 years ago.
Cryptic Central Vent
A moderate-sized cluster of two to three vents beneath the present-day lake was largely destroyed during Holocene caldera collapse.
Caldera collapse was caused by plinian or subplinian eruption about 5800 years ago.