The MOC image is represented by the darkened rectangular picture. The context scene is a portion of Viking Orbiter 1 image 545a08. B MOC image 47903, shown at 25 percent original size.
North is approximately up, illumination is from the right.
Detail of the ejecta shown in the area in the box correponds to Fig. Ejecta around craters are the evidence that the subsurface is volatile-rich. The larger the ejecta, the higher the mobility value, the higher the ratio of ice is. There is a relationship between crater diameter and crater depth.