Moon over Arizona
September 12th, 2007 by WesA few years before the first landing of an Apollo crew on the moon, scientists recontoured a volcanic field just outside of Flagstaff, Arizona, with artificial impact craters resembling those found on Mare Tranquillitatis, the proposed first manned American landing site.
With high explosives, they terraformed a lunar surrogate right here on the surface of the earth.
This is interesting, I never knew about this training ground. Neat stuff.