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1959 Map of Shell Reef, 1971 Print
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1959 Map of Shell Reef

USGS Topo · Published 1971

About this map

Anza-Borrego Desert State Park dominates the western portion of this arid landscape, where the boundary between San Diego and Imperial counties cuts through a complex network of dry washes and desert terrain. The map documents a rugged environment defined by geological and historical markers, including the curious Pumpkin Patch and the namesake Shell Reef. These features, along with the Ocotillo Badlands, suggest a landscape shaped by ancient marine deposits and subsequent erosion, far removed from the more hospitable Five Palms Spring.

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Map Details

Date Portrayed1959
Date Published1971
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24,000
Physical Dimensions22.1 x 26.8 inches

Editions of this 1959 Shell Reef Map

Historical Maps of San Diego County Through Time

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Source Details

SourceU.S. Geological Survey
CopyrightPublic Domain