NABSQNO 12S-528092-3582296Rocky Arch, Pima County, Arizona Photo by Jay Wilbur NABSQNO 12S-528092-3582296. Rocky Arch is a fin natural arch eroded through a wall of granitic rock. It is located in the Coronado National Forest, in Pima County, Arizona. Access is via the paved Sky Island Parkway which goes right by the arch. Vreeland listed this arch as number 12-30 in his catalog and reported a span of 15 feet.
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