1994 Map of Sumdum D-4

About this map

Sawyer Glacier and the adjacent South Sawyer Glacier dominate this 1994 topographic study, their massive ice fields calving directly into the deep fjords of Tracy Arm. This landscape, protected within the Tracy Arm-Fords Terror Wilderness, is part of the extensive Tongass National Forest. The map documents the intricate boundary between the United States and Canada, where the peaks of Alaska meet the high ridges of British Columbia. The topography represents data compiled between 1948 and 1961, with planimetry updated from 1987 imagery, offering a precise look at the glacial extent and the sheer coastal inlets like Terror at a specific moment in the late 20th century before the accelerated shifts in the regional ice mass.