11 Facts About Lassen Peak

Lassen Peak, commonly referred to as Mount Lassen, is a lava dome volcano and the southernmost active volcano in the Cascade Range of the Western United States.

The park, along with the nearby Lassen National Forest and Lassen Peak, have become popular destinations for recreational activities, including climbing, hiking, backpacking, snowshoeing, kayaking, and backcountry skiing.

Lassen Peak is dormant, meaning the volcano is merely inactive, and it has a functioning magma chamber under the ground still capable of eruptions.

Lassen Peak has the highest known winter snowfall amounts in California.

Volcanism within the Lassen Peak vicinity follows a trend of intermittent, episodic eruptions punctuating long periods of dormancy, a pattern which persisted through the late Pleistocene and Holocene.

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Unlike more conventional, conical stratovolcanoes like Mount Shasta or Mount Rainier, Lassen Peak is part of a volcanic center that erupts from different vents, which each remain active for a number of years or decades but often do not erupt from the same vent twice, known as a monogenetic volcanic field.

Lassen Peak's first recorded ascent took place in 1851, led by Grover K Godfrey.

Deposits from older mudflows that can be traced specifically to the Lassen Peak dome have been found in Hat Creek, Lost Creek, and in a region to the east of the Devastated Area.

Lassen Peak's photographs have been used to help understand the timeline and geology of the 1915 eruptions of Lassen Peak.

Lassen Peak remains an active volcano, as volcanic activity including fumaroles, hot springs, and mudpots can be found throughout Lassen Volcanic National Park.

Lassen Peak is one of four Cascade volcanoes that has undergone subsidence since 1990, with Medicine Lake Volcano, Mount Baker, and Mount St Helens.