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).
Keywords: lava dome