This image, taken by the Mars orbiter camera on NASA's Mars Global Surveyor spacecraft, shows gullies on martian crater walls that may be carved by liquid water melting from remnant snow packs. Numerous gullies are seen, with a remnant of the snow pack (arrow) proposed to be the source of water that eroded the gullies. This Mars orbiter camera image (number M09-2875) covers an area of 2.8 kilometers (1.7 miles) by 4.5 kilometers (2.8 miles) and is located at 33.3 degrees south, 92.9 degrees east. North is toward the top, and illumination is from the left.

NASA's Jet Propulsion Laboratory manages the Mars Global Surveyor mission for NASA's Office of Space Science, Washington, D.C. The Mars orbiter camera was provided by Malin Space Science Systems. Lockheed Martin Astronautics, Denver, is the prime contractor for the 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.