Dark Sand and Bright Bedrock in Terra Meridiani

This HiRISE image shows dark sand covering bright bedrock in the Terra Meridiani region of Mars.

The MER Opportunity rover is currently exploring Meridiani, but is located about 500 kilometers to the west-southwest from here (as of 2007).



There are three broad classes of terrain in this image. The regular spacing of the dark ridges, with one side of the ridges (in this case generally on the northwest) shallower than the other, indicates that the material is windblown sand deposited in t [...]

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