Lava Beds National Monument lies in this group of peaks.
One volcano in this chain, Mount Mazama, was largely destroyed around 7,000 years ago. Lava Beds National Monument lies in this group of peaks. Its southernmost mountain was thought extinct until it erupted in 1914 and is called Lassen Peak. Other peaks in this range include Broken Top, Three Fingered Jack, and the Three Sisters. This mountain range is separated from the Coast Mountains to the north by the Fraser River and was formed from the subduction of the Juan de Fuca Plate. The Columbia River Gorge runs through this chain, which also contains Crater Lake. For 10 points, name this section of North America's Pacific mountain system that extends from northern California up into British Columbia whose peaks include Mount Hood, Mount Rainier, and Mount St. Helens.
One volcano in this chain, Mount Mazama, was largely destroyed around 7,000 years ago.
Cascade Range