Lassen Volcanic Center

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Geologic field-trip guide to Lassen Volcanic National Park and vici...
December 31, 2015

Geologic field-trip guide to Lassen Volcanic National Park

Geologic field-trip guide to Lassen Volcanic National Park and vicinity, California

Lassen Volcanic Center, California simplified hazards map showing p...
December 31, 2014

Lassen Volcanic Center, CA simplified hazards map

Lassen Volcanic Center, California simplified hazards map showing potential impact area for ground-based hazards during a volcanic event.

Volcano hazard zone map for Lassen Volcanic Region in Northern Cali...
December 31, 2012

Volcano hazard zone map for Lassen Volcanic Region in Northern CA p...

Volcanic Hazard Assessment for the Lassen Region, California is based upon a comprehensive investigation of the eruptive history and possible future eruption scenarios with associated volcanic hazards.

Chaos Crags in Lassen Volcanic National Park
September 13, 2012

Chaos Crags in Lassen Volcanic National Park

Chaos Jumbles (foreground) is a rockfall avalanche that formed around 340 years ago when one of the Chaos Crags domes (background) collapsed.

Chaos Crags in Lassen Volcanic National Park
August 4, 2012

View of Chaos Crags in Lassen Volcanic National Park from Lassen Peak.

Chaos Crags is a series of lava domes that erupted about 1,100 years ago from the Lassen Volcanic Center.

Cinder Cone in Lassen Volcanic National Park
January 5, 2009

Cinder Cone in Lassen Volcanic National Park

Cinder Cone erupted in the year 1666 in the Lassen Volcanic Region of northern California.

Lassen Peak photographed from the Devastated Area prior to the 1914...

Lassen Peak photographed from the Devastated Area prior to 1914-191...

Lassen Peak photographed from the Devastated Area prior to the 1914-1915 eruption that changed the landscape.

Lassen Peak photographed from the Devastated Area about 4 hours bef...

Lassen Peak photographed from the Devastated Area about 4 hours bef...

Lassen Peak photographed from the Devastated Area about 4 hours before the explosive eruption of May 22, 1915.

Lassen Peak viewed from the south at the summit of Brokeoff Volcano...

Lassen Peak viewed from the south at the summit of Brokeoff Volcano...

Lassen Peak viewed from the south at the summit of Brokeoff Volcano, Lassen Volcanic National Park.