2018 Map of Sumdum A-2 SE

About this map

Devils Thumb dominates the high-altitude landscape where the international boundary between the United States and Canada meets the frozen expanses of the Tongass National Forest. This survey captures a terrain of extreme glacial ice and vertical rock faces, featuring prominent geological landmarks such as Cats Ears. The movement of ice is a defining characteristic of this area, with the massive Baird Glacier and Patterson Glacier carving through the mountain passes. The presence of LeConte Glacier further illustrates the complex hydrological system at play in these coastal mountains. Because this map documents the precise intersection of international borders and massive ice fields, it serves as a critical reference for understanding the geography of the Stikine Icefield region during the early twenty-first century.