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The heavily cratered surface of Tethys was photographed at l:35 a.m. PST on November 12 from a distance of l.2 million kilometers (750,000 miles) by Voyager l.
This face of Tethys looks toward Saturn and shows a large valley about 750 kilometers long and 60 kilometers wide (500 by 40 miles). The craters are probably the result of impacts and the valley appears to be a large fracture of unknown origin. The diameter of Tethys is about 1000 kilometers (600 miles) or slightly less than l/3 the size of our Moon.
The smallest feature visible on this picture is about 24 kilometers across.
The Voyager Project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif.