South Twentymile Peak
Summit in Okanogan County, Washington · on the USGS Spur Peak quadrangle
48.67002, -120.05729
Maps that show South Twentymile Peak
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Spur Peak, WA — USGS 7.5-minute topo (2023)
USGS Topo Maps (public domain) · Washington
Public domain
Doe Mountain, WA — USGS historical 15-minute topo (1963)
USGS Historical Topo Maps (public domain) · Washington
Public domain
Tonasket OHV Map Conconully Motor Vehicle Use Map (MVUM) — Colville National Forest
Forest Service Maps (public domain) · Colville National Forest
Public domain
IFR Enroute Low Altitude Chart L-01 (U.S.) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
IFR Enroute Low Altitude Chart L-13 (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
IFR Enroute Low Altitude Chart L-01 (Alaska) — FAA, 2026-10-29
FAA IFR Enroute Charts (public domain)
Public domain
Name, class, county and location: USGS Geographic Names Information System (public domain).