Freedom Crater
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Freedom Crater

October 12, 2009
Freedom crater, located in Acidalia Planitia, exhibits a concentric ring pattern in its interior, suggesting that there has been some movement of these materials towards the center of the crater. Slumping towards the center may have been caused by the presence of ground ice mixed in with the sediments. The origin for the scarps on the western edge of the interior deposit is unknown.

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