Image Credit: NASA/JPL/ASU

Context image credit: NASA/JPL/MOLA
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Detailed information on this image is available at the THEMIS Data Releases website.

 

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Two craters east of the Hellas impact basin dominate the field of view of this THEMIS visible image. The craters are alike in that they have been filled in by a lot of material after they were formed. There is an important difference between them.The northern crater in the image has a relatively smooth, flat bottom, and the infilling material looks as if it hasn't been heavily disturbed since it was emplaced. Contrast this with the interior of the second crater. The infilling material has been heavily eroded.