The discussion centers on the ripple patterns observed on the Martian surface, specifically questioning whether they are wind-formed sand dunes or remnants of a catastrophic flood event. Analysis indicates that the ripples are consistent across flat areas and old craters, suggesting that wind, rather than water, is the primary force shaping these formations. Observations of wind direction, particularly from the top right to the bottom left, further support the conclusion that these are wind-blown sand dunes prevalent on Mars.
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Water runs downhill and cuts deep valleys. The ripples are the same on the flat areas as in the old crater. That suggests it was not water that caused it.neilparker62 said:
Wind blown sand dunes, you will find them all over the Martian surfaceneilparker62 said: