The international border between the Canada / United States of America defines the northern edge of this remote high-country terrain. Situated within Okanogan Co, Washington, the landscape is characterized by a dense network of mountain drainage systems and seasonal streams that flow south from the border. This 2014 survey captures a section of the northern Cascades where human infrastructure is limited to primitive forest roads and 4WD tracks, emphasizing the area's role as a protected wilderness corridor. The lack of named settlements or structures highlights the primary use of this land for timber management and backcountry recreation under the oversight of the U.S. Forest Service.
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This is the sole edition of this map. No revisions or reprints were ever made.
1955 · Concrete
USGS Topo · 1:250,000
1958 · Concrete
USGS Topo · 1:250,000
1962 · Concrete
USGS Topo · 1:250,000
1969 · Remmel Mtn.
USGS Topo · 1:24,000
1969 · Ashnola Pass
USGS Topo · 1:24,000
1969 · Bauerman Ridge
USGS Topo · 1:24,000
2001 · Bauerman Ridge
USGS Topo · 1:24,000
2002 · Ashnola Pass
USGS Topo · 1:24,000
2002 · Remmel Mountain
USGS Topo · 1:24,000
2011 · Ashnola Pass
USGS Topo · 1:24,000