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Up close and personal with Comanche

Up close and personal with Comanche
Up close and personal with Comanche The Spirit rover touches the outcrop named Comanche on sol 698 (December 19, 2005). At the lower left of the rock, two "fins" protrude -- these are places where the rock fractured and the fractures were later filled with minerals that then proved more resistant to erosion than the original rock. NASA / JPL-Caltech