2018 Map of Iliamna C-2 NW

About this map

The Williamsport-Pile Bay Road provides a critical overland corridor through the mountainous terrain where the Chigmit Mountains and the Aleutian Range meet. This 2018 survey documents a remote coastal interface along the Pacific Ocean, where the deep indentations of Iliamna Bay and Cottonwood Bay reach inland toward the high country. Coastal landmarks such as Diamond Point and AC Point define the rugged shoreline, while the interior is marked by the high-elevation Summit Lakes and the drainage of Chinkelyes Cr. The topographic detail highlights the dramatic transition from sea level to the steep ridges of the Aleutian chain, illustrating the geographic constraints that dictated the path of the region's limited road infrastructure.