
The Lincoln Co Polk Co line divides this heavily timbered portion of the Oregon Coast Range, where industrial activity is defined by an extensive network of haul roads and extraction sites. Numerous borrow pits and quarries dot the landscape, particularly surrounding Warnicke Creek and Boulder Creek, indicating the intense road-building and maintenance required for mid-century logging operations. The terrain is characterized by sharp elevations like Stott Mtn and Sugarloaf Mountain, with various Falls and Rapids marking the steep descent of waterways toward the North Fork Siletz River.
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1941 · Nestucca Bay
USGS Topo · 1:62,500
1942 · Euchre Mtn
USGS Topo · 1:62,500
1942 · Spirit Mtn
USGS Topo · 1:62,500
1942 · Nestucca Bay
USGS Topo · 1:62,500
1942 · Valsetz
USGS Topo · 1:62,500
1943 · Euchre Mtn
USGS Topo · 1:62,500
1948 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1950 · Vancouver
USGS Topo · 1:250,000
1953 · Salem
USGS Topo · 1:250,000