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At several locations in the southern hemisphere there are craters that have been filled with material almost to the top of the crater rim. What the material is and where it came from are still open questions, and may not even be the same process from crater to crater. In several of these filled craters there are canyon like features where the fill material has been removed or eroded. Sometimes the depressions parallel the crater rim, but in other cases the depression is in the center of the crater and is usually linear. A ring of gullies encircle the top of the depression in this crater. This unnamed crater is located in southern Noachis Terra.

Orbit Number: 74984 Latitude: -68.5481 Longitude: 1.57599 Instrument: VIS Captured: 2018-11-09 10:35

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

NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Science Mission Directorate, 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.