This map shows the Mars Exploration Rover Spirit's travels since arriving on the red planet Jan. 3, 2004 PST. Spirit is on its way to a large crater nicknamed "Bonneville." On the 52nd day, or sol, of its mission (Feb. 25, 2004), it stopped off at a region nicknamed "Middle Ground" to investigate rocks and soil. The rover is facing northeast and is 98 meters (322 feet) away from the rim of "Bonneville." Data within the yellow box represent a digital map made of images taken by the rover's panoramic and navigation cameras. Data outside this box are a composite of images from the rover's descent image motion estimation system camera and NASA's orbiter Mars Global Surveyor.