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1969 Map of Egan Basin

Name: 1969 Topographic Map of Egan Basin
Creator: U.S. Geological Survey
Published: 1973
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1973

About this map

The Bear River Range dominates this late-1960s topographic survey, where high-altitude drainages and limestone geology define the landscape of the Cache National Forest. In this remote Idaho-Utah border region, water is the primary architect of the terrain, from the mountain springs that feed St Charles Creek to the secluded waters of Blue Lake and Hidden Lake. The map details a complex network of seasonal transport, marking numerous pack trails and jeep trails that navigate the ridges between Egan Basin and Franklin Basin.

A notable geological feature is the Sink Hollow, where the surface drainage of the high basins gives way to subterranean limestone systems common in this part of the range. The geography here is marked by steep canyons and named hollows like Corral Hollow and Pat Hollow, reflecting the region's history of summer grazing and forest management before the more intensive recreational development of later decades. This survey provides a clear view of the headwaters of the Logan River and the high-elevation passage at Danish Pass.