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1958 Map of Tyonek C-6

Name: 1958 Topographic Map of Tyonek C-6
Creator: U.S. Geological Survey
Published: 1974
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1974

About this map

Triumvirate Glacier and Trimble Glacier dominate this interior Alaskan landscape, their massive icy flows joined by a complex network of crevasses and glacial meltwater. The drainage pattern is defined by the Trimble River, which is fed by the converging waters of the North Branch and South Branch. This mid-century survey captures the region during a period of extensive aerial photogrammetric mapping by the U.S. Geological Survey, documenting the high-altitude terrain before significant modern shifts in glacial margins.

Strandline Lake sits at the foot of the southern peaks, while to the north, the Hayes River Pass provides a natural corridor through the mountains. Nearby, Coal Creek suggests early geological interest in the mineral potential of the area. The map includes gray land lines representing unsurveyed locations predetermined by the Bureau of Land Management, highlighting the remote and wild nature of this territory during the 1950s.