Ring Mold Craters
Ring Mold Craters look like the ring molds used in baking. They are believed to be caused by an impact into ice. The ice is covered by a layer of debris. They are found in parts of Mars that have buried ice. Laboratory experiments confirm that impacts into ice result in a "ring mold shape." They may be an easy way for future colonists of Mars to find water ice.
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CTX context image for next image taken with HiRISE. Box indicates image footprint of following image.
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Possible ring mold crater, as seen by HiRISE under the HiWish program. Crater shape is due to impact into ice.
Read more about this topic: Casius Quadrangle
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