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Aerial view of Mount Lassen with snow, early May 2018. Lassen Peak lies within Lassen Volcanic National Park, in Shasta County, California, 55 mi (89 km) east of the city of Redding. [4] Lassen Peak and the rest of the National Park area are surrounded by the Lassen National Forest, [5] which has an area of 1,200,000 acres (4,900 km 2). [6]
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 .
The last major eruptions of Lassen Peak occurred in April through June 1917, when a new crater was created at the summit of the mountain. Less explosive activity continued through 1921. [1] [24] The Smithsonian considers the eruption of Mount Lassen to have ended on June 29, 1917. [36]
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. Bumpass discovered the geothermal ...
The Cascades extend northward from Lassen Peak (also known as Mount Lassen) in northern California to the confluence of the Nicola and Thompson rivers in British Columbia. The Fraser River separates the Cascades from the Coast Mountains in Canada, [4] as does the Willamette Valley from the upper portion of the Oregon Coast Range.
Cinder Cone lies in Lassen and Shasta counties, in Northern California, within the United States.Located 1.5 mi (2.4 km) southwest of Butte Lake and 2.2 mi (3.5 km) southeast of Prospect Peak [1] (which dwarfs Cinder Cone), [2] it is also sometimes referred to as Black Butte or Cinder Butte. [1]
Lake Helen in Lassen Volcanic National Park in June of 2024. Lake Helen is a glacial lake or a tarn occupying a cirque at around 8,200 feet (2,500 m) in Lassen Volcanic National Park. [1] The lake is located to the south of Lassen Peak and west of Bumpass Mountain in the Shasta Cascades region of Northern California.
The Chaos Crags consist of five small lava domes, made of rhyodacite, [14] which line up with the western edge of the Mount Tehama caldera. [15] The youngest part of the Lassen volcanic center's dome field [16] and the youngest domes in the Eagle Peak sequence, [14] they reach an elevation of about 1,800 feet (550 m) above their surroundings. [16]
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