The dark rippled surfaces are sand dunes. The bright circular feature is an old impact crater filled with north polar ice deposits. The bright surface in the upper right corner is also covered with ice. The patchy, bright-gray splotches in the lower left are clouds. The 10 kilometer scale bar represents a distance of 6.2 miles.
North is up, illumination is from the lower right.
Local context for MOC image 50805 subframe. Base map is a mosaic of Viking Orbiter 2 images 065b56 and 065b58. The Viking images were taken in October 1976, at a time when the north polar region was in the middle of summer. The MOC image was taken in August 1998, when the north polar region was in early spring. In order to catch these dunes with MOC during the same time of year that Viking saw them, a new image would have to be acquired in June 1999.