Boulder Spring
Spring in Gila County, Arizona · on the USGS Sombrero Peak quadrangle
33.81383, -110.79896
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Sombrero Peak, AZ
USGS topo, 2026
McFadden Peak, AZ
USGS historical 15-minute topo (1949)
McFadden Peak, AZ
USGS historical 15-minute topo (1950)
IFR Enroute Low Altitude Chart L-08 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-05 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-04 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-03 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).