I've had the privilege of visiting a number of aircraft boneyards over the last couple of years, including AMARG at Davis-Monthan AFB in Tucson. They are indeed fascinating places, full of history. But access is often a problem, especially at facilities like the Pinal Airpark northwest of Tucson and Mojave Airport in California.
I'm still documenting an overview of some of the major boneyard and aircraft storage facilities, with my current efforts posted at ...
Aircraft boneyards in the Western deserts for storage and disposal of military aircraft and airliners