Is there a volcano in california?

Lassen (or Lassen Peak) volcano in northern California is located at the southern end of the Cascade Range. Besides Mt St. Helens, it is the only volcano in the contiguous US that erupted in the 20th century. read more

Volcano (formerly, Soldier's Gulch and The Volcano) is a census-designated place[3] in Amador County, California. It lies at an elevation of 2070 feet (631 m). The population was 115 at the 2010 census. read more

California Volcano Observatory's mission As a part of the U.S. Geological Survey's Volcano Hazards Program, the California Volcano Observatory aims to advance scientific understanding of volcanic processes and lessen the harmful impacts of volcanic activity in the volcanically active areas of California and Nevada. read more