Chaos Crags, Volcanic mountain in Lassen Volcanic National Park, California, US
The group of six dacite domes forms a 2476-meter peak with steep cliffs rising 750 meters above Manzanita Lake in Shasta County.
The volcanic formation emerged through intense eruptions 1100 years ago, with one dome collapsing during an explosive event 70 years after its creation.
Scientists from the United States Geological Survey monitor the area continuously for potential rock slides and volcanic activity that could affect nearby communities.
Visitors access the mountain via two trails from Manzanita Lake, with the Chaos Crags and Crags Lake Trail extending 4.2 miles through forest terrain.
The Chaos Jumbles at the base resulted from a massive rock avalanche 300 years ago, when debris traveled at 160 kilometers per hour on compressed air.
Location: Shasta County
Elevation above the sea: 2,476 m
GPS coordinates: 40.52417,-121.52111
Latest update: March 20, 2025 08:50
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Loomis Museum
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Chaos Jumbles
2.4 km
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Lassen Volcanic Center
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Mather Plaque in Lassen Volcanic National Park
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Manzanita Lake Campground
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Summit Lake North Campground
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Hat Creek Culvert
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Lost Creek Group Campground
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