2017 Map of Petersburg B-1 NE

About this map

Virginia Lake and the drainage of Porterfield Cr characterize this coastal mountain landscape within the Tongass National Forest. The terrain is defined by dramatic elevation changes from the Gulf of Alaska shoreline at Madan Bay to the high alpine environments of the Coast Mountains. This survey documents the glaciated topography of the early 21st century, showing the position of Nelson Glacier and the distinct alpine depressions of Glacier Basin and Berg Basin. Human presence is primarily indicated by the Aaron Creek Trail in the southeast, while the rest of the quadrangle remains largely untouched by development. Significant landmarks like Marsha Peak and Point Madan provide reference points for navigating this complex system of ridges and glacial valleys.