2021 Map of Sumdum A-1 SE

About this map

Tongass National Forest dominates this international boundary region, where the high-altitude ice of LeConte Glacier flows through the steep terrain of the Stikine Icefield. The survey centers on the jagged peak of Kates Needle, a prominent landmark that defines the physical border between the United States and Canada. This 2021 update illustrates the modern extent of glacial features and the precise alignment of the international boundary near the southeastern Alaskan panhandle. The mapping is primarily focused on physical geography rather than human infrastructure, detailing the complex drainage patterns and elevation contours that characterize this high-alpine wilderness.