Keywords: mars nasa jpl mro space science geology astronomy university of arizona universityofarizona blackandwhite monochrome texture black and white A Small, Sharp Looking Crater: We say "sharp" because the rim is still well-defined, although the crater itself is quite old, probably on the order of 10s of meters across. A Small, Sharp Looking Crater: We say "sharp" because the rim is still well-defined, although the crater itself is quite old, probably on the order of 10s of meters across. |