Apollo 11 lunar training sites near Flagstaff, Ariz.
Dreams of outer space began at places like Lowell Observatory, near Flagstaff, Ariz. As preparations for the 1969 Apollo 11 moon mission were being made, artists worked with scientists to create detailed lunar maps, based, in part, on observation through Lowell telescopes.(Lowell Observatory )
Otherworldly landscapes near Flagstaff, Ariz., became training grounds for Apollo astronauts. Sunset Crater Volcano National Monument and its surroundings were used to test spacesuits, rover prototypes, gear and instruments.(National Park Service / Flagstaff Convention & Visitors Bureau)
A relief map of the San Francisco volcanic field in northern Arizona, where NASA astronauts trained.(Grand Canyon Assn./USGS Flagstaff Field Center)
Sunset Crater viewed from the west.(Education Images / UIG via Getty Images)
July 1968: construction of Cinder Lake crater field No. 2 east of Flagstaff. A simulated lunar surface consisting of 354 craters was created with explosives.(USGS)