The Coast Mountains dominate this high-altitude Alaskan landscape within the Tongass National Forest. The map documents a heavily glaciated wilderness defined by massive ice fields and sharp peaks. Significant ice features such as Oasis Glacier and Baird Glacier fill the valleys between prominent summits, including Agassiz Peak and Dome Peak. To the south, the Buddington Range and the isolated rise of Hump Knoll provide distinct markers for navigation and study. This modern survey reflects the late-2010s state of these glaciers, providing a baseline for tracking changes in the ice and terrain of the Petersburg Borough over time. The lack of roads or human settlements emphasizes the character of this region as a protected, high-alpine environment where topographical features are the only landmarks.
14 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.
1952 · Sumdum
USGS Topo · 1:250,000
1961 · Sumdum A-2
USGS Topo · 1:63,360
1961 · Sumdum B-2
USGS Topo · 1:63,360
1961 · Sumdum A-3
USGS Topo · 1:63,360
1961 · Sumdum B-3
USGS Topo · 1:63,360
1961 · Sumdum
USGS Topo · 1:250,000
1996 · Sumdum B-3
USGS Topo · 1:63,360
2000 · Sumdum A-2
USGS Topo · 1:63,360
2000 · Sumdum B-2
USGS Topo · 1:63,360
2018 · Sumdum B-2 SW
USGS Topo · 1:25,000