Contents

01 October 1976
Vol 194, Issue 4260

About The Cover

Color mosaic of Viking 1 Orbiter pictures. Fifteen frames taken through three color filters (violet, green, and red) were reconstituted by the U. S. Geological Survey, Flagstaff, Arizona. The scene covers approximately 1800 by 2000 kilometers and contains part of the “Grand Canyon of Mars” (Vallis Marineris). The Viking 1 landing site is north of the scene. See page 97.