This illustrated image of Mexico's Yucatan Peninsula shows a subtle indication of the Chicxulub impact crater in the upper left. Most scientists now agree that this impact was the cause of the Cretaceous-Tertiary Extinction, the event 65 million years ago that marked the sudden extinction of the dinosaurs, as well as the majority of all life then on Earth.

Image Courtesy SRTM Team NASA/JPL/NIMA

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crater Encyclopedic Entry

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6 - 12 and up

Geography, Science

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A crater is a bowl-shaped depression produced by the impact of a meteorite, volcanic activity, or an explosion.