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Open space that was used by the military half a century ago may still bear marks.
near Racetrack Road, Death Valley NM, CA (1989).
The open space of military bases may pose special management problems.
near Santa Lucia Memorial Park, Fort Hunter Liggett, CA (1968).
Huge areas not open tot he public are preserved as open space for use by the military.
Yuma Proving Grounds, near Yuma, AZ (1987).