Spirit's dragging wheel digs up bright soil

Spirit's dragging wheel digs up bright soil
Spirit's dragging wheel digs up bright soil As Spirit headed eastward toward a hoped-for winter haven on McCool hill on sol 788, its wheels stirred up an unusually large quantity of bright-colored, presumably salty soil. For the full-resolution image, visit the Planetary Photojournal. NASA / JPL-Caltech / Cornell

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