Overview map showing the location of the study area within Aeolis Dorsa (star). The boundary that separates the elevated, cratered, southern highlands from the smooth northern lowlands has long drawn similarities to ocean basins on Earth. The region of Aeolis Dorsa (dotted line) exposes an extensive sedimentary deposit containing numerous raised ridges that are interpreted as inverted river channels.
Image Credit: DiBiase et al./Journal of Geophysical Research/2013
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