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Crater Lake National ParkLupine in an alpine meadow
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Crater Lake National Park
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Did You Know?  

Did You Know?
Crater Lake was formed when a massive eruption of Mount Mazama 7700 years ago caused the mountain to collapse, leaving a steaming caldera. Centuries of rain and snow filled the caldera creating Crater Lake.

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Last Updated: February 01, 2007 at 17:53 EST