Hopper Mountain
Summit in Ventura County, California · on the USGS Piru quadrangle
34.47777, -118.86547
Maps that show Hopper Mountain
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Piru, CA — USGS 7.5-minute topo (2022)
USGS Topo Maps (public domain) · California
Public domain
Piru, CA — USGS historical 15-minute topo (1900)
USGS Historical Topo Maps (public domain) · California
Public domain
Piru, CA — USGS historical 15-minute topo (1921)
USGS Historical Topo Maps (public domain) · California
Public domain
Piru, CA — USGS historical 15-minute topo (1941)
USGS Historical Topo Maps (public domain) · California
Public domain
IFR Enroute Low Altitude Chart L-07 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-04 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-04 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
Name, class, county and location: USGS Geographic Names Information System (public domain).