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

Mars digital-image mosaic merged with color of the MC-1 quadrangle, Mare Boreum region of Mars. The central part is covered by a residual ice cap that is cut by spiral-patterned troughs exposing layered terrain. The cap is surrounded by broad flat plains and large dune fields. Latitude range 65 to 90, longitude range -180 to 180.

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