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1988 Map of Little Glass Mountain
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1988 Map of Little Glass Mountain

USGS Topo · Published 1988

About this map

Little Glass Mountain dominates this volcanic landscape where the boundaries of the Klamath National Forest, Modoc National Forest, and Shasta National Forest converge. This 1980s-era survey reveals an environment shaped by relatively recent geomorphic activity, notably the Crater Glass Flow and a series of prominent craters including Paint Pot Crater, Shastine Crater, and Giant Crater. The industrial character of the region is evident through the widespread extraction of volcanic materials, marked by the Pumice Mines near Pumice Stone Mountain and several Cinder Pit locations. Water resources are scarce in this porous terrain, limited to remote installations like Bray Well and Pumice Stone Well. High points such as Little Mt Hoffman and Red Cap Mountain provide vantage points over the Grasshopper Flat and the complex obsidian and pumice deposits that define this portion of Siskiyou County.

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Map Details

Date Portrayed1988
Date Published1988
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions21.9 x 26.6 inches

Editions of this 1988 Little Glass Mountain Map

This is the sole edition of this map. No revisions or reprints were ever made.

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain