1960 Map of McCarthy D-4

About this map

Chisana Glacier dominates the northern expanse of this high-altitude landscape, its ice fields marked by numerous crevasses as it flows through the terrain. This 1960 field-annotated survey captures a frozen wilderness defined by massive ice movements and high peaks, such as Frederika Mountain, which stands between the Frederika Glacier and the Middle Fork Glacier. The intricate contour lines reveal the dramatic verticality of features like the Jumpoff Icefall and the steep passage at Bow Pass. This map is particularly notable for its documentation of the glacial hydrology in the Wrangell Mountains region, showing the headwaters of Boomerang Creek and Bow Creek emerging from the receding ice. Remote and unroaded, the area is charted with a focus on natural barriers and navigational landmarks used by early aviators and mountain explorers.