Twin Hills
Summit in Pima County, Arizona · on the USGS Tanque Verde Peak quadrangle
32.20526, -110.74918
Maps that show Twin Hills
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Tanque Verde Peak, AZ
USGS topo, 2021

Rincon Valley, AZ
USGS historical 15-minute topo (1957)

Santa Catalina Ranger District Motor Vehicle Use Map (MVUM)
Coronado National Forest

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
Name, class, county and location: USGS Geographic Names Information System (public domain).