Signal Rock
Pillar in Colusa County, California · on the USGS Wilbur Springs quadrangle
39.06295, -122.47720
Maps that show Signal Rock
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Wilbur Springs, CA — USGS 7.5-minute topo (2024)
USGS Topo Maps (public domain) · California
Public domain
Venado, CA — USGS historical 15-minute topo (1920)
USGS Historical Topo Maps (public domain) · California
Public domain
Wilbur Springs, CA — USGS historical 15-minute topo (1944)
USGS Historical Topo Maps (public domain) · California
Public domain
Wilbur Springs, CA — USGS historical 15-minute topo (1961)
USGS Historical Topo Maps (public domain) · California
Public domain
Indian Valley Wildlife Area — California CDFW
California CDFW Wildlife Area Maps · 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-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
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).