File:South Ray crater contour map p115a.jpg

English: Topographic contour map of South Ray crater, on the moon. This is Figure 106 of Apollo Over the Moon (NASA SP-362, 1978), which has the following caption:
Another view of the crater South Ray. This detailed topographic map was prepared under the supervision of S. S. C. Wu of the U.S. Geological Survey by photogrammetric techniques. Prepared from a stereo pair of panoramic camera photographs, it is one of the largest scale maps ever done with Apollo orbital images. The area shown here is a small part of a map that was used for compiling geologic data from the Apollo 16 mission. Dashed lines have been added to the original map to show the crest of South Ray's rim. From this type of topographic representation, the width, depth, slope of the walls, and other parameters can be measured. For example, the maximum depth of the crater, measured from the high point on the rim (7771 m) to the low point in the floor (7628 m), is 143 m. -G.W.C.