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1988 Map of North Sister
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1988 Map of North Sister

USGS Topo · Published 1988

About this map

North Sister and Middle Sister dominate this high-elevation landscape, where glacial systems and volcanic formations meet along the crest of the Cascade Range. As of the late 1980s, the area reflects a transition from early mountaineering history to modern wilderness management, evidenced by commemorative sites like the Prouty Memorial Plaque and Bronaugh Memorial Plaque. The terrain is defined by active geology, including the Collier Glacier and the Ahalapam Cinder Field, alongside features like the Four In One Cone and Yapoah Crater.

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Map Details

Date Portrayed1988
Date Published1988
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.8 inches

Editions of this 1988 North Sister Map

Historical Maps of Lane County Through Time

538 maps found

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain