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1973 Map of Floating Island SW, 1977 Print
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1973 Map of Floating Island SW

USGS Topo · Published 1977

About this map

The Bonneville Salt Flats (Depression) dominates this 1970s orthophotomap, revealing the stark, crystalline geography of the Great Salt Lake Desert. This specialized survey, produced using photogrammetric methods from 1972 aerial photography, provides a high-resolution look at the specialized infrastructure of land-speed racing. The International Racetrack Overrun is clearly visible, extending into the northern sections of the salt crust. Surrounding the primary salt beds are expansive areas of Mud Flat, where the shifting boundaries between solid salt and seasonal wetness define the landscape. Beyond the racing surface, human transit is limited to a single Jeep Trail, emphasizing the area's environmental intensity. The map also documents essential surveying markers, including the Base Line and township boundaries such as the division between T 1 N and T 1 S.

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Map Details

Date Portrayed1973
Date Published1977
PublisherU.S. Geological Survey
Map TypeTopographic
Scale1:24000
Physical Dimensions21.8 x 26.6 inches

Editions of this 1973 Floating Island SW 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