Roberts Butte
Summit in Modoc County, California · on the USGS Big Swamp quadrangle
41.23027, -121.11889
Maps that show Roberts Butte
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Big Swamp, CA — USGS 7.5-minute topo (2022)
USGS Topo Maps (public domain) · California
Public domain
Ash Creek Wildlife Area Map — Ash Creek Wildlife Area — California CDFW
California CDFW Wildlife Area Maps · California
Public domain
Bieber, CA — USGS historical 15-minute topo (1961)
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-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-03 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute High Altitude Chart H-01 (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).