Mount Tehama, Eroded stratovolcano in Shasta County, United States.
Mount Tehama consists of andesitic formations reaching 3,350 meters in height with a base circumference extending 12 kilometers across northern California.
The volcanic structure formed through multiple eruptions between 590,000 and 387,000 years ago, producing flows ranging from basaltic andesite to dacite materials.
Native American tribes of northern California consider the mountain landscape a central element in their traditional stories and ceremonial practices.
Visitors need permits from the forest service to access the wilderness areas, with summer offering the most favorable conditions for exploration.
The mountain's hydrothermal activity altered its volcanic rocks, leading to extensive erosion that exposed the ancient volcano's core through Mill Canyon.
Location: Shasta County
Location: Tehama County
Made from material: andesite
GPS coordinates: 40.44544,-121.55943
Latest update: May 23, 2025 02:42
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Chaos Crags
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Drakesbad Guest Ranch
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Loomis Museum
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Lassen Volcanic National Park Highway Historic District
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Park Headquarters, Lassen Volcanic National Park
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Manzanita Lake Naturalist's Services Historic District
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Summit Lake Ranger Station
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Hot Rock
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Devastated Area Interpretive Trail
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Discovery Center
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Sulphur Works
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Loomis Ranger Station
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Seismograph Building
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Seismograph
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Bumpass Hell
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Manzanita Ranger Residence
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Chaos Jumbles
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Lassen Peak Trailhead
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Sulphur Works
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Hat Creek Trailhead
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Bumpass Hell Trailhead
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Lassen Volcanic Center
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Mather Plaque in Lassen Volcanic National Park
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Hat Creek Culvert
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Manzanita Kiosk
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Northwest Entrance Checking Station and Ranger Residence
10.3 kmReviews
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