Mesas and Dunes in Mars’ Hellas Basin http://blogs.discovermagazine.com/badastronomy/2009/04/13/dune-mars-2/

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Victoria Crater on Mars Taken by HiRISE on the Mars Reconnaissance Orbiter Image: NASA/JPL-Caltech/University of Arizona

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Radial Features Carved by Dry Ice Taken by HiRISE on the Mars Reconnaissance Orbiter

Image credit: NASA/JPL-Caltech/University of Arizona

]http://www.nasa.gov/mission_pages/MRO/multimedia/mro20090930.html

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“Swiss Cheese” terrain Taken by HiRISE on the Mars Reconnaissance Orbiter

Image credit: NASA/JPL-Caltech/University of Arizona

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Hale Crater Wall Image credit: NASA / JPL-Caltech /University of Arizona

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Corozol Crater Image credit: NASA / JPL-Caltech /University of Arizona

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Circular Feature on Mars’ South Polar Cap Taken by HiRISE on the Mars Reconnaissance Orbiter

Image credit: NASA/JPL-Caltech/University of Arizona

http://photojournal.jpl.nasa.gov/catalog/PIA13727

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Starburst Spider, South Pole Taken by HiRISE on the Mars Reconnaissance Orbiter

Image credit: NASA/JPL-Caltech/University of Arizona

http://photojournal.jpl.nasa.gov/catalog/PIA11858

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Procter Crater Dune Field Taken by HiRISE on the Mars Reconnaissance Orbiter

Image credit: NASA/JPL-Caltech/University of Arizona

]http://www.nasa.gov/mission_pages/MRO/multimedia/mro20090930.html

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Polygonal patterned ground at the bottom of a crater

Image credit: NASA/JPL-Caltech/University of Arizona

http://mars.nasa.gov/multimedia/marsasart/?ImageID=5314

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