Very high threat potential 1 lassen volcanic center long valley caldera mount shasta high threat potential 1 clear lake volcanic field medicine lake mono inyo chain salton buttes moderate threat potential 1 coso volcanic field mammoth mountain mono lake volcanic field soda lakes nv ubehebe craters 1. Lassen or lassen peak volcano in northern california is located at the southern end of the cascade range. At least seven california volcanoes medicine lake volcano mount shasta lassen volcanic center clear lake volcanic field long valley volcanic region coso volcanic field and salton buttes have partially molten rock magma deep within their roots and research on past eruptions indicates they will erupt again in the future. Mount shasta is a potentially active volcano located within the southern part of the cascade range in siskiyou county. The stratovolcano last erupted in 1786 is believed to have been observed by french explorer lapérouse.
Young volcanoes in california nevada. Photo by david mcnew getty images. Salton buttes is situated within the salton trough a tectonic depression formed by the san. Helens it is the only volcano in the contiguous us that erupted in the 20th century. Red hill one of the four salton buttes small volcanoes on the southern san andreas fault at the salton sea is seen on june 30 near calipatria california.
Red hill one of the four salton buttes small volcanoes on the southern san andreas fault at the salton sea is seen on june 30 near calipatria california. Young volcanoes in california nevada. Very high threat potential 1 lassen volcanic center long valley caldera mount shasta high threat potential 1 clear lake volcanic field medicine lake mono inyo chain salton buttes moderate threat potential 1 coso volcanic field mammoth mountain mono lake volcanic field soda lakes nv ubehebe craters 1.