1960 Map of McCarthy D-5

About this map

Whiskey Hill Glacier and Rohn Glacier dominate this 1960 survey of a remote Alaskan landscape, where the shifting ice fields are marked by numerous crevasses. The map documents a transition point in the high terrain at Chisana Pass, a critical topographic corridor in this portion of the Copper River Meridian. Geologists and surveyors of the era utilized prominent landforms like the Presidents Chair and an established Base Line to navigate and measure this largely unsurveyed territory. The mapping reflects 1950s aerial photography and subsequent field annotations, illustrating a time when high-altitude Alaskan topography was being systematically charted through photogrammetric methods rather than direct ground checks for every ridge and ice flow. The presence of the Regal Glacier to the south further emphasizes the massive scale of the glacial systems that define the region's physical character.