Dictionary  cra'ter lake"a body of water occupying a roughly circular, steep-sided volcanic crater or caldera. Cra'ter Lake'a lake in the crater of an extinct volcano in SW Oregon, in Crater Lake National Park. 20 sq. mi. (52 sq. km); 1996 ft. (608 m) deep. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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