Mars Odyssey THEMIS Image: Grooved Terrain

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Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
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Strange-looking grooved terrain overlies lava flows off of the western flank
of the giant shield volcano Arsia Mons. It has recently been speculated that
the large, concentric ridges are glacial features called moraines, which were
deposited as a dry-bottomed glacier receded and left sand and rocks behind.

[Source: ASU THEMIS Science Team]

NASA’s Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA’s Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in collaboration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena.

Image Credit: NASA/JPL/Arizona State University