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Dark Spots
dark spots (left) and fans  on Mars

Dark spots (left) and 'fans' appear to scribble dusty hieroglyphics on top of the Martian south polar cap in two high-resolution Mars Global Surveyor, Mars Orbiter Camera images taken in southern spring. Each image is about 3-kilometers wide (2-miles).

Image Credit: NASA/JPL/Malin Space Science Systems

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