Lasson National Park
During ice ages , glaciers have modified and helped to erode the older volcanoes in the park. Above this elevation, the climate is harsh and cold, with cool summer temperatures. All of these volcanoes are 7,—8, feet 2,—2, m above sea level and each is topped by a cinder cone volcano. Prevent the spread of tree-killing pests by obtaining firewood at or near your destination and burning it on-site.
Buses and other non-reportable vehicles are subtracted from the vehicle count, which is then multiplied by three, an estimate of the number of visitors per vehicle.
Also shown is the outline of Brokeoff Volcano Mount Tehama. The park is located near the northern end of the Sacramento Valleynear the cities of Redding and Susanville. It is located in portions of ShastaLassenPlumasand Tehama counties.
The western part of the park features great lava pinnacles huge mountains created by lava flowsjagged craters, and steaming sulfur vents. It is cut by glaciated canyons and is dotted and threaded by lakes and rushing clear streams.
Here, small cinder cones are found. Lassen Peak is made of dacite an igneous rockand is one of the world’s largest plug dome volcanoes. The trees are Jeffrey pines Pinus jeffreyi. Sulphur Works is a geothermal area in between Lassen Peak and Brokeoff Mountain that is thought to mark an area near the center Lasson National Park Tehama’s now-gone cone.
The magma that fuels the volcanoes in the park is derived from subduction off the coast of Northern California. Cinder Cone and the Fantastic Lava Bedslocated about 10 miles 16 km northeast of Lassen Peak, is a cinder cone volcano and associated lava flow field that last erupted about It created a series of basaltic andesite to andesite lava flows known as the Fantastic Lava Beds.
There are four shield volcanoes in the park; Mount Harkness southwest corner of the Glacier National Park To Great Falls MtRed Mountain at south-central boundaryProspect Peak in northeast cornerand Raker Peak north of Lassen Peak. All of these volcanoes are 7,—8, feet 2,—2, m above sea level and each is topped by a cinder cone volcano.
During ice agesglaciers have modified and helped to erode the older volcanoes in the park. Despite not having any glaciers currently, Lassen Peak does have 14 permanent snowfields. SR 89 passes north-south through the park, beginning at SR 36 to the south and ending at SR 44 to the north. SR 89 passes immediately adjacent to the base of Lassen Peak. There are five vehicle entrances to the park: the north and south entrances on SR 89; and unpaved roads entering at Drakesbad and Juniper Lake in the south, and at Butte Lake in the northeast.
The park can also be accessed by trails leading in from the Caribou Wilderness to the east, as well as the Pacific Crest Trailand two smaller trails leading in from Willow Lake and Little Willow Lake to the south. Above Lasson National Park elevation, the Lasson National Park is harsh and cold, with cool summer temperatures.
Precipitation within the park is high to very high due to a lack of a rain shadow from the Coast Ranges. Snowfall at the new visitor center near the southwest entrance at 6, feet 2, m is around inches 1, cm despite facing east. Up around Lake Helenat 8, feet 2, m the snowfall is around — inches 1,—1, cmmaking it probably the snowiest place in California.
Climate data for Manzanita Lake, Lasson National Park 5, ft 1, m Month.
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After millenia of eruptions, geologists propose the magma chamber ran dry, ending the volatile life of this volcano. In two large basaltic lava flows seeped out of the base of the volcano, devouring everything in its path, damming creeks, and creating the two lakes. During ice ages , glaciers have modified and helped to erode the older volcanoes in the park.