NASA's Mars Exploration Rover Spirit used its navigation camera to record this scene on the day the rover arrived at the crest area of "Husband Hill" inside Gusev Crater. That was Spirit's 581st martian day, or sol, on Aug. 21, 2005. The rover had just completed its longest one-sol drive in months, 44.8 meters or 47 feet, before taking this picture. A wind-sculpted ripple of sand or dust dominates the foreground, on top of the hill, while a whirlwind lofts a column of dust above the plain in the distance.