Orbital photo of lunar surface.<br>This photo was used in Figure 25-91 (b) of the <i>Apollo 15 Preliminary Science Report</i> (SP-289, 1971), which has the following caption:<br>Western portion of Aristarchus Plateau, including a significant part of Schroter's Valley. (a) Lunar Orbiter IV photograph, indicating areas shown in photographs provided in parts (b) to (d) of this figure. This area, approximately 250 km square, shows abundant evidence of volcanic activity. (b) Northwestern edge of Aristarchus Plateau. Higher crater density on the plateau and the highly sinuous rilles at the mare edge are evident. Mare ridges in the upper left continue northwest into Oceanus Procellarum, and numerous smaller sinuous rilles are seen that are barely visible in photography taken at higher Sun angles (AS15-98-13329). (c) Area east of that shown in part (b) of this figure. Features enhanced by the low Sun include the mare ridges and associated structures, areas of differing crater densities, and flow fronts (AS15-98-13331). (d) Southwestern edge of Aristarchus Plateau. Several straight and slightly sinuous rilles originate in the plateau and are obscured in the mare. Three units of varying crater density can be seen. The most heavily cratered includes the plateau; the intermediate unit is more marelike and appears to be the unit in which the rilles originate; and the least cratered area is in the mare and embays into the rilles (AS15-98-13345).
NASA
1971
<a rel="nofollow" class="external text" href="http://tothemoon.ser.asu.edu/gallery/Apollo/15/Hasselblad%20500EL%2070%20mm">Magazine 98</a>, Apollo 15, March to the Moon