NASA Mars Odyssey THEMIS Image: The Summit of Olympus Mons

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Context image credit: NASA/Mars Orbiter Laser Altimeter (MOLA) Team
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Bold scarps and extensional features (grabens) record multiple stages of
caldera collapse at the summit of Olympus Mons. The wrinkle ridges are
contractional features, and probably formed during the cooling of an ancient
lava lake, prior to the collapse events. Olympus Mons is the
largest volcano in our solar system, reaching heights of over 40 km tall from
base to summit, with the base covering an area as large as the state of
Arizona.

[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