Chaos Crags

Chaos Crags is a volcanic formation in California composed of six light-colored lava domes that cluster together to form a roughly 2,500-meter peak. Steep rock faces rise more than 700 meters above Manzanita Lake, creating a striking backdrop in the northern part of Lassen Volcanic National Park.

The six domes formed roughly 1,100 years ago during intense volcanic activity in the region. One of these domes collapsed approximately 70 years after its creation in a significant explosive event.

Scientists from the United States Geological Survey monitor the area continuously for potential rock slides and volcanic activity that could affect nearby communities.

The mountain is accessible via two trails from Manzanita Lake, with one route stretching roughly 6.8 kilometers through forest. The terrain is steep and rocky, so sturdy footwear and careful footing are important.

The Chaos Jumbles at the base resulted from a colossal rock avalanche roughly 300 years ago, when massive boulders rushed down the slope at tremendous speed. This boulder field remains visible today as a testament to the raw force of such a geological event.

Location: Shasta County

Elevation above the sea: 2,476 m

GPS coordinates: 40.52417,-121.52111

Latest update: December 10, 2025 16:27