Image Credit: NASA/JPL/ASU

Context image credit: NASA/JPL/MOLA
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Detailed information on this image is available at the THEMIS Data Releases website.

 

Please see the THEMIS Data Citation Note for details on crediting THEMIS images.

 

Because it does not rain on Mars, the wind is free to shape the surface to the extent that it becomes clear even in spacecraft images. This images shows parallel grooves oriented north to south, slowly eroded by winds of the same alignment. At the bottom of the image, a round mesa is most likely an inverted crater -- that is, a crater that has withstood the wind erosion to such a degree that it remains on the surrounding plains as a protruding structure, rather than a hole in the ground.