Overview of Crater Lake National Park: History

Crater Lake was formed from the collapse of Mount Mazama, a volcano in southern Oregon that once stood about 11,000 feet tall. A series of destructive eruptions around 5000 BC caused the mountain's peak to collapse into its lava chamber, resulting in a caldera nearly six miles wide. Read More »

Crater Lake National Park
Crater Lake National Park
Crater Lake National Park
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iGuide, the Interactive Travel Guide. About iGuide.
Overview of Crater Lake National Park: History is based on Crater Lake National Park by Bill Ellett, Mike Cook, John Malone, Stefan Ertmann, Bill Johnson, Charles E. Leiserson, Jr., Felicity T, iGuide and others. Travel guides are available under Creative Commons Attribution-ShareAlike 3.0. See background image credits.