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Global Volcanism Program | Image GVP-03262

Chaos Crags in the foreground and Lassen Peak in the background are large lava dome complexes in the southern Cascade Range. Chaos Crags consists of a group of six overlapping rhyodacite lava domes that erupted around 1,100 years ago. Lassen last erupted during 1914-17. Photo by Dan Dzurisin, 1982 (U.S. Geological Survey).

Chaos Crags in the foreground and Lassen Peak in the background are large lava dome complexes in the southern Cascade Range. Chaos Crags consists of a group of six overlapping rhyodacite lava domes that erupted around 1,100 years ago. Lassen last erupted during 1914-17.

Photo by Dan Dzurisin, 1982 (U.S. Geological Survey).

Keywords: lava dome


Lassen Volcanic Center