Clear Lake Volcano, California

Clear Lake Volcano - John Seach
California, USA

38.97 N, 122.77 W
summit elevation 1439 m
Volcanic field

The volcanic field consists of cinder cones, maars, and lava dome complexes.
It is the largest natural freshwater lake in California.

Volcanic activity is related to extension within the San Adreas fault system.
A large magma chamber about 14 km diameter lies 7 km beneath the volcano.
It is responsible for the geysers and geothermal field on SW side of the volcano.

Holocene eruptions of Clear Lake Volcano