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North Polar region of Mars; http://photojournal.jpl.nasa.gov/catalog/PIA00161
Original Caption Released with Image:
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.
Composed of Viking-1 Orbiter images
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Credit line: "Courtesy NASA/JPL-Caltech."
All NASA pictures are free of copyright.
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