English: Mare Vaporum, on the moon, facing south. The low sun angle of 9 degrees accentuates topography. Taken from an altitude of approximately 104 km on Revolution 36 of the Apollo 17 mission. This is Figure 7.5 of The Geologic History of the Moon by Don E. Wilhelms, which has the following caption (modified for clarity):
Terrain southeast of Imbrium basin, lying just beyond lower right corner of photograph. Circular mare in top half of photograph is Mare Vaporum, about 220 km across. Linear- and knob-textured terrae are parts of Imbrium-basin ejecta. Circularity of mare suggests that it fills a Vaporum basin or crater, which was deeply buried by Imbrium ejecta before mare flooding. Several small craters were superposed on Imbrium material before mare flooding. Graben near left-hand crater is also post-Imbrium and premare (graben is part of set possibly not related to basins). Rima Hyginus is in background. View southerly.