4 telephoto panoramas, each comprising 10 silver gelatin prints joined, of Lunar Orbiter image V-202-205H, 59 by 61 inches overall, framed. 

Ex Robert H. "Steiny" Steinbacher, JPL scientist

See Bowker & Hughes, Lunar Orbiter Photographic Atlas of the Moon; Illustrated in: Cortright, Exploring Space with a Camera, p. 124 (detail).

Taken from an altitude of 87 miles from the lunar surface, this large mosaic image of Schröter's Valley, located near the crater Aristarchus, brings into evidence one of the most unusual features of the lunar surface: its sinuous rilles. Basically long, meandering channels, scientists believe that they may be collapsed lava tubes, as they usually begin at an extinct volcano, and meander and split across the lunar surface in the way that a river would flow.