The Daily Mail has a pretty good piece up with about 30 non-traditional images from the Aerospace Maintenance and Regeneration Center at Davis-Monthan Air Force Base in Tucson, Arizona, better known as the Boneyard.
According to the Air Force’s official site on the base: Immediately after World War II, the Army’s San Antonio Air Technical Service Command established a storage facility for B-29 and C-47 aircraft at Davis-Monthan AFB. Today, this facility is the 309th Aerospace Maintenance and Regeneration Group (309 AMARG), which has grown to include more than 4,400 aircraft and 13 aerospace vehicles from the Air Force, Navy-Marine Corps, Army, Coast Guard, and several federal agencies including NASA.
Besides the obvious excess inventory, there are a number of historic obsolete aircraft that should be on public display but are apparently just living out a dry life in the desert.