Established in 1916, Lassen Volcanic National Park is nestled within the peaceful forests and untouched wilderness of Northern California. A closer look at the landscaped, however, reveals hissing fumaroles and boiling mud pots still shape and change the land, evidence of Lassen’s fiery past of an active volcano.
In 1915, an explosive eruption at Lassen Peak, the southernmost active volcano in the Cascade Range, devastated nearby areas and rained volcanic ash as far away as 200 miles to the east. This explosion was the last to occur in the Cascades before the 1980 eruption of Mt. St. Helens. Lassen Peak is the largest of a group of more than 30 volcanic domes that have erupted over the past 300,000 years within Lassen National Park.