1956 Map of Killik River

About this map

The Brooks Range dominates this mid-century survey of the Arctic North Slope, where the Continental Divide separates the northward flow of the Colville River watershed from the southern interior. The landscape is defined by its massive river systems, including the Killik River, Kurupa River, and Etivluk River, which cut through dramatic formations like the Itiklikruich Ridges and Ivotuk Hills. This era of exploration is marked by the expansive Naval Petroleum Reserve No 4, which covers the western half of the sheet.