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1985 Map of Sugar Mountain

Name: 1985 Topographic Map of Sugar Mountain
Creator: U.S. Geological Survey
Published: 1986
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1986

About this map

Isle Royale National Park dominates this mid-1980s topographic record, capturing the wilderness character of Michigan's Keweenaw County. The landscape is defined by the massive parallel formations of Greenstone Ridge and Minong Ridge, which dictate the flow of water through Washington Creek and the Little Siskiwit River. While much of the terrain is dedicated to conservation, the map preserves the location of the historic Island Mine, a remnant of the island's copper mining legacy.

Tracing the northern shoreline reveals the treacherous Finlander Reef in Lake Superior, while the interior is dotted with significant water bodies like Lake Desor and Lily Lake. The integration of traditional trails, such as the Greenstone Trail and Minong Trail, illustrates the established recreational routes used by hikers and researchers. From the heights of Mount Desor to the lowlands of Grace Creek, the map provides a clear picture of the island's geological and logistical layout before the late 20th century.