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Spirit rover tracks at Tyrone, sol 1096 While dragging a stuck wheel during drives around home plate, Spirit uncovered a strange bright soil at a spot named "Tyrone." The soil was interesting enough that the rover returned to the spot to explore it. This version of the image is from archival science data taken through red, green, and blue filters, so its color is more or less what the human eye would see. NASA / JPL-Caltech / Cornell / Emily Lakdawalla