Digital Elevation Map of Spirit's Trek

Caption NASA originale: "The blue area represents the basaltic plains on the floor of Gusaev Crater, about 20 meters below the Rover's present location. Spirit crossed those plains for several months after landing to the west, off the left edge of this image. The greenish-blue area is the "West Spur" of the "Columbia Hills," which Spirit reached on sol 156 (June 11, 2004). Since then, Spirit has been gradually ascending the slopes of the "West Spur" in an east-northeasterly direction. Southeast of the Rover's current position is a brighter green area that represents an abrupt increase in slope where the "West Spur" meets the steeper flanks of the "Columbia Hills." The yellow and red areas represent the highest slopes and peaks. A steep valley east of the Rover's location appears, from orbiter images, to have layered outcrops. Scientists are directing the Rover to a ridge overlooking the valley to get a better look at what lies ahead".