Opal Hill
Summit in Calaveras County, California · on the USGS Valley Springs SW quadrangle
38.09322, -120.89129
Maps that show Opal Hill
Get them in the map app
Valley Springs SW, CA — USGS 7.5-minute topo (2021)
USGS Topo Maps (public domain) · California
Public domain
Valley Springs, CA — USGS historical 15-minute topo (1944)
USGS Historical Topo Maps (public domain) · California
Public domain
Valley Springs, CA — USGS historical 15-minute topo (1956)
USGS Historical Topo Maps (public domain) · California
Public domain
Valley Springs, CA — USGS historical 15-minute topo (1962)
USGS Historical Topo Maps (public domain) · California
Public domain
IFR Enroute Low Altitude Chart L-02 (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 Low Altitude Chart L-09 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-11 (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).