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Crater Lake is located in Southern Oregon on the crest of the Cascade Mountain range, 100 miles (160 km) east of the Pacific Ocean. It lies inside a caldera, or volcanic basin, created when the 12,000 foot (3,660 meter) high Mount Mazama collapsed 7,700 years ago following a large eruption.
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Crater Lake is a snow melt filled volcano crater in south central Oregon, USA. The water is very pure and awsomely blue. It is the deepest Lake in the USA at 1946 feet.