Blue Door Flat
Lake in Lassen County, California · on the USGS Cold Spring Mountain quadrangle
41.05963, -120.34374
Maps that show Blue Door Flat
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Cold Spring Mountain, CA
USGS topo, 2022
IFR Enroute Low Altitude Chart L-02 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-09 (U.S.)
FAA, 2026-10-29
IFR Enroute Low Altitude Chart L-11 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-03 (U.S.)
FAA, 2026-10-29
IFR Enroute High Altitude Chart H-01 (U.S.)
FAA, 2026-10-29
Nearby
Name, class, county and location: USGS Geographic Names Information System (public domain).