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Keywords: mars nasa jpl mro space science astronomy planetary geology university of arizona universityofarizona blackandwhite monochrome texture abstract waterfall water outdoor landscape black and white Putative Paleolake - Once in the ancient past, this might have been a lake. Studying minerals will help determine if any clays are present. Putative Paleolake - Once in the ancient past, this might have been a lake. Studying minerals will help determine if any clays are present. |