Lassen Volcanic Center

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 five overlapping dacitic lava domes that were erupted a little over 1000 years ago. Lassen Peak was formed about 25,000 years ago, but last erupted during 1914-17.

Type/Process: Lava Dome
Volcanic Status: Historical
Image Number: 032-062
Photographer: Dan Dzurisin, 1982 (U.S. Geological Survey)
Summit Elevation: 3187 meters
Latitude/Longitude: 40.492 N / 121.508 W
Timeframe: Last known eruption 1900-1963
Region: Canada and Western USA