1956 Map of Coleen A-3

About this map

The Porcupine River dominates this mid-century subarctic landscape, carving a wide path through the Yukon-Koyukuk region. In the north, the river takes a sharp, distinctive turn at Fishhook Bend, encircling Henry Martin Island. Evidence of human presence in this remote interior is sparse, marked primarily by isolated structures like Curtis Cabin and another unnamed Cabin located near the northern river bend. These outposts, along with the junction of the Coleen River and Fish Creek, represent the essential landmarks for navigation and survival in the era before modern development. The mapping relies on a series of vertical angle benchmarks, including VABM 1377 Bend and VABM Wheel 723, to define the elevations of the surrounding highlands above the alluvial plains.