2021 Map of Sumdum D-4 SE

About this map

The South Sawyer Glacier dominates the northwestern portion of this 2021 topographic survey, where its icy tongue pushes through the Coast Mountains. This high-altitude landscape is almost entirely defined by the boundaries of the Tongass National Forest, illustrating the sheer scale of federal land management in the Alaskan panhandle. The terrain is a complex arrangement of sharp ridgelines and steep glacial valleys, where contour lines crowd closely together to indicate extreme vertical relief. This particular sheet captures the glacial environment at a specific modern moment, recording the extent of the ice and the surrounding topography within the surveyed townships of t46s r76e and t47s r76e.