<p><strong>January 20, 2010—</strong>Colorful patches of rock known as megabreccia cover part of the central peak in <a id="gnpx" title="Mars" href="http://science.nationalgeographic.com/science/photos/mars/">Mars</a>'s Toro Crater, as seen in a recently released false-color picture from the <a id="q8bl" title="High-Resolution Imaging Science Experiment, or HiRISE" href="http://hirise.lpl.arizona.edu/">High-Resolution Imaging Science Experiment, or HiRISE</a>, camera.</p><p>Breccia contains rocky chunks that had been broken up by a major geologic event—such as an impact or a landslide—and then cemented together by finer-grained material. When the chunks are big enough—in this case, larger than 30 feet (9.1 meters) across—the orbiting HiRISE camera can make out the brilliant features.</p>

Megabreccia in Toro Crater

January 20, 2010—Colorful patches of rock known as megabreccia cover part of the central peak in Mars's Toro Crater, as seen in a recently released false-color picture from the High-Resolution Imaging Science Experiment, or HiRISE, camera.

Breccia contains rocky chunks that had been broken up by a major geologic event—such as an impact or a landslide—and then cemented together by finer-grained material. When the chunks are big enough—in this case, larger than 30 feet (9.1 meters) across—the orbiting HiRISE camera can make out the brilliant features.

Image courtesy NASA/JPL/University of Arizona

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