To test logistics long before astronauts arrived for training exercises the geologists would themselves dress up in space suits. Here, astrogeologists Tim Hait and David Schleicher explore their simulated lunar terrain at the Cinder Lake Crater Field in Flagstaff, Arizona, in October 1967. They wanted to see how well astronauts could use different maps and follow planned traverses while navigating an actual crater field. Behind the geologists is a mockup of the lunar module ascent stage.