Lancaster Mountain
Summit in San Diego County, California · on the USGS Bonsall quadrangle
33.32200, -117.13457
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Bonsall, CA
USGS topo, 2022

Temecula, CA
USGS historical 15-minute topo (1942)

IFR Enroute Low Altitude Chart L-07 (U.S.)
FAA, 2026-10-29

IFR Enroute Low Altitude Chart L-04 (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
Name, class, county and location: USGS Geographic Names Information System (public domain).