First Picture Clearly Showing Craters on Mars Date: 07.15.1965 With a range of 13,600 km and a sun angle of 29 degrees from zenith, this Mariner 4 image was the first picture showing unambiguous craters on the surface of Mars. The area, 262 x 310 km, is a heavily cratered region south of Amazonis Planitia, centered at 14 S, 174 W. North is at about 11:00. (Mariner 4, frame 07B)
