Mars digital-image mosaic merged with color of the MC-2 quadrangle, Diacria region of Mars. This image is from NASA's Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-2 quadrangle, Diacria region of Mars. The northern two-thirds is dominated by relatively smooth plains. The southeastern part is marked by aureole deposits of the largest known volcano in the solar system, Olympus Mons. Latitude range 30 to 65 degrees, longitude range 120 to 180.

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