Tsina River flows through this mountainous region near the settlement of Ptarmigan, where critical infrastructure and transport routes converge. The Alaska Pipeline and Richardson Highway parallel the river valley, illustrating the corridor's significance for state-wide logistics and energy transport. The terrain is marked by steep elevation changes, with drainage provided by Ptarmigan Cr, Small Cr, and Cascade Cr. At the southern edge of the valley, the Thompson Pass Airport serves as a remote aviation point in a landscape otherwise defined by these linear transit corridors. This survey provides a precise view of the interface between massive engineering projects and the natural topography of the Unorganized Borough.
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This is the sole edition of this map. No revisions or reprints were ever made.
1951 · Valdez B-5
USGS Topo · 1:63,360
1951 · Valdez B-4
USGS Topo · 1:63,360
1952 · Valdez
USGS Topo · 1:250,000
1953 · Valdez B-4
USGS Topo · 1:63,360
1953 · Valdez A-4
USGS Topo · 1:63,360
1953 · Valdez A-5
USGS Topo · 1:63,360
1960 · Valdez
USGS Topo · 1:250,000
1994 · Valdez A-4
USGS Topo · 1:63,360
1994 · Valdez B-4
USGS Topo · 1:63,360
1995 · Valdez B-5
USGS Topo · 1:63,360