Mars Odyssey Mission THEMIS: Feature Image: Concentric Crater Fill (Released 24 January 2003)

Vital Statistics
Location: 34.3N, 75.5E	Released: 2003-01-24
Image Size: 19.5 x 69.3 km, 1024 x 3648 px
Resolution: 19m	Instrument: VIS

Image Credit: NASA/JPL/ASU

Image Context:
Context image for 20030124a

Wide Context:
Wide context image for 20030124a

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.

The bizarre patterns on the floor of this crater in Nilosyrtis Mensae defy an easy explanation. At 34 degrees north latitude, this location hardly qualifies as 'Arctic' yet it is likely that some form of periglacial process possibly combined with the vaporization of ground ice is responsible for this intriguing landscape.