NASA/JPL/Malin Space Science Systems
Unlike southern mid-latitude craters, many northern mid-latitude craters do not have gullies but are instead partially filled with layered material. Often, the crater ejecta blankets are also partially covered. This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a typical example located near 38.9°N, 185.3°W. The picture covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the lower left.
Malin Space Science Systems and the California Institute of Technology built the MOC using spare hardware from the Mars Observer mission. MSSS operates the camera from its facilities in San Diego, California. The Jet Propulsion Laboratory's Mars Surveyor Operations Project operates the Mars Global Surveyor spacecraft with its industrial partner, Lockheed Martin Astronautics, from facilities in Pasadena, California and Denver, Colorado.