PDF | Cerros de trincheras in northern Sonora and southern Arizona have traditionally been interpreted as short-term, defensive refuges. This paper... | Find, read and cite all the research you need on ResearchGate
The blue hashed area in the center left is the approximate area of the 16k acre (26 square mile) Arizona State Trust Land Sale for the expansion of the Bagdad Mine. Prescott in center right for size reference.
The land here was just a bit different - not sure if the impact was grazing or... The signs in the area noted that berms had been build and reseeding done - perhaps to restore this area - a restoration on the N-Bar ranch is also mentioned on the signs.