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1965 Map of De Long Mountains

Name: 1965 Topographic Map of De Long Mountains
Creator: U.S. Geological Survey
Published: 1965
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1965

About this map

The De Long Mountains and the western reaches of the Brooks Range dominate this mid-century sub-arctic landscape, where high peaks give way to a network of rivers flowing toward the Chukchi Sea. Along the coast, Agiak Lagoon and landmarks like Corwin Bluff and Cape Sabine mark the transition from the Arctic Ocean to the interior highlands.

Evidence of human movement and resource extraction appears in the north, where a Winter Trail connects coastal points and the Thetis Mine sits near the headwaters of Thetis Creek. The map documents a complex drainage system, including the Kokolik River, Kukpowruk River, and Wulik River, which carve through deep basins such as the Beaufort Basin and Raven Basin. This 1964 update of earlier surveys provides a clear view of this remote territory before significant modern development altered the northern coastal plain.