Designed by Cecil Clyde Gideon, the self-taught superintendent of Custer State Park turned highway designer. He called them “spiral-jumpoffs”.

2007-08-20-002ed-pano-photoblog.JPG

Composite of 3 images

August 20, 2007, 9:26 A.M. - Pentax K10D: ISO 100, 18mm focal length (27mm in 35mm format), 1/60 second, F4.5

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