LABORATORY SERIES. No.19. Aerial image of the XB-70 Valkyrie crash site 12 miles north of Barstow, CA. Edwards Air Force Base in the Mojave Desert has been the test site and crash site for military aircrafts since the 1940s.Though the military recovers as much from the wreckage as possible, the landscape still bears evidence of these crashes. The XB-70 Valkyrie was wrecked during a photo shoot following a routine test mission in 1966. Photo Courtesy of Center for Land Use Interpretation