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Crater Mound

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noun
  1. a bowl-shaped depression in the earth in central Arizona: believed to have been made by the impact of a meteoroid. 4000 feet (1220 meters) wide; 600 feet (183 meters) deep.
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Also called Meteor Crater.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018