The boundary between Whatcom Co and Okanogan Co bisects this high-elevation landscape, where the Pacific Crest National Scenic Trail winds through some of the most prominent gaps in the region. The map highlights a series of significant mountain crossings, including Slate Pass, Harts Pass, and Grasshopper Pass, which historically served as vital conduits for movement through this portion of the Cascades. Near Slate Peak, the elevation and aspect define the drainage patterns for the Middle Fork Pasayten River and the headwaters of the Methow River.
42 named features on this map. Tap any name to fly to it.
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This is the sole edition of this map. No revisions or reprints were ever made.
1920 · Slate Pass
USGS Topo · 1:125,000
1955 · Concrete
USGS Topo · 1:250,000
1958 · Concrete
USGS Topo · 1:250,000
1962 · Concrete
USGS Topo · 1:250,000
1963 · Washington Pass
USGS Topo · 1:24,000
1963 · Azurite Peak
USGS Topo · 1:24,000
1963 · Slate Peak
USGS Topo · 1:24,000
1963 · Mt. Arriva
USGS Topo · 1:24,000
1963 · Silver Star Mtn.
USGS Topo · 1:24,000
1963 · Robinson Mtn.
USGS Topo · 1:24,000