
Tongass National Forest dominates this high-altitude landscape along the international border in Petersburg Borough. The terrain is defined by extreme vertical relief, culminating in the prominent peak of Mt Burkett in the southern portion of the quadrangle. This map documents a strictly natural landscape where the boundary between the Canada United States of America follows the rugged crests of the coastal range. The absence of roads or permanent settlements underscores the wilderness character of this region, which remains a critical area for glaciological study and high-alpine exploration within the larger Alaskan panhandle.
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This is the sole edition of this map. No revisions or reprints were ever made.
1952 · Sumdum
USGS Topo · 1:250,000
1960 · Sumdum A-1
USGS Topo · 1:63,360
1961 · Sumdum A-2
USGS Topo · 1:63,360
1961 · Sumdum B-2
USGS Topo · 1:63,360
1961 · Sumdum
USGS Topo · 1:250,000
2000 · Sumdum A-2
USGS Topo · 1:63,360
2000 · Sumdum B-2
USGS Topo · 1:63,360
2018 · Sumdum A-1 NW
USGS Topo · 1:25,000
2018 · Sumdum A-2 NE
USGS Topo · 1:25,000
2018 · Sumdum A-1 SE
USGS Topo · 1:25,000