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Lassen Peak (/ ˈ l æ s ə n / LASS-ən), [3] commonly referred to as Mount Lassen, is a 10,457 ft (3,187 m) lava dome volcano in Lassen Volcanic National Park in Northern California.
Map of Lassen Volcanic National park Mount Shasta from Lassen Peak Painted Dunes and Fantastic Lava Beds as seen from the edge of Cinder Cone's crater. Lassen Volcanic National Park is a national park of the United States in northeastern California .
Former extent of Mount Tehama (Brokeoff Volcano) The earliest volcanic activity of the Lassen Volcanic Center commenced 825,000 years ago. [2] The Rockland complex formed between 825,000 and 609,000 years ago. It was the source of lava domes and lava flows of dacitic composition.
Lassen Volcanic National Park has a lot in common with its famous sister parks, but far fewer visitors.
Mount Tehama (also called Brokeoff Volcano or Brokeoff Mountain) is an eroded andesitic stratovolcano in the Cascade Volcanic Arc and the Cascade Range in Northern California. Part of the Lassen volcanic area , its tallest remnant, Brokeoff Mountain, is itself the second highest peak in Lassen Volcanic National Park and connects to the park's ...
The two other volcanoes in California with that classification are Mt. Shasta in Siskiyou County and the Lassen Volcanic Center, which includes Lassen Peak in Shasta County.
Cinder Cone is in Lassen Volcanic National Park. Cinder Cone is a 700 ft (210 m)-high volcanic cone of loose scoria. [5] The youngest mafic volcano in the Lassen volcanic center, [6] it is surrounded by unvegetated block lava and has concentric craters at its summit, [5] which have diameters of 1,050 ft (320 m) and 590 ft (180 m). [3]
As part of Mount Tehama's main vent, Bumpass Hell is the result of fissures that tap the volcanic heat, thought to be a cooling mass of andesite, perhaps three miles (5 km) below the surface. It is named after Kendall Vanhook Bumpass , a cowboy and early settler who worked in the Lassen Peak area in the 1860s.