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Sometimes, we acquire an image for the simple reason of getting either more coverage of an area, and/or to complete a mosaic of a particular spot.

Such is the case for this observation near the center of a massive, eroded and unnamed impact crater in Arabia Terra. It’s located to the west of the much larger Cassini and Pasteur craters. 


Image: NASA/JPL/University of Arizona https://www.uahirise.org/hipod/ESP_065196_1960
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Ancient Rivers

Billions of years ago, a river flowed across this scene in Mawrth Vallis. Like on Earth, these river beds can get filled up with rocks that are cemented together.