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1985 Map of Lake Richie

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

USGS Topo · Published 1986

About this map

Minong Ridge and Greenstone Ridge define the ancient, corrugated spine of this island landscape, creating a series of elongated troughs filled by water bodies like Angleworm Lake and Lake Richie. This mid-1980s survey captures the remote character of Isle Royale National Park, where human presence is marked only by primitive campsites and an extensive network of footpaths including the Minong Ridge Trail and Indian Portage Trail.

Evidence of historical copper exploration remains visible through the Minong Mine near the northern ridge and the Datolite Mine closer to the shore of Lake Superior. The complex shoreline along the southern edge shows deep inlets like Chippewa Harbor and Moskey Basin, highlighting the unique coastal geography that shaped early maritime access to the island's interior before it was preserved as a wilderness area.