HiPOD (13 May 2018): Arc-Shaped Ridges ata  Valley Base in…

HiPOD (13 May 2018): Arc-Shaped Ridges ata  Valley Base in Protonilus Mensae 

   This feature may be related to the movement of ice. HiRISE may be able to resolve differences in the materials in and around the ridges. 

297 km above the surface, less than 5 km across. (NASA/JPL/University of Arizona)

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