In the late 1920s and early 1930s, the Department of Commerce constructed large concrete arrows on the ground as visual navigational aids for the planes flying the mail route from Los Angeles to Salt Lake City.
Directional Arrow
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© Bing Maps
By skyeye @ 2013-05-04 20:39:43
jbottero
@ 2013-05-05 13:26:02
Outstanding.
Anonymous
@ 2013-08-23 12:51:12
Should be in grade school history books!