Prehistoric Kansans may have celebrated the winter solstice, Dec. 21, by building intaglios, or animal figures, into hillsides across the Kansas prairie. Very few remain today. This one, photographed in 1982 near Lyons, features a 160-foot serpent with a ball in its mouth. Archeologists believe it may have been dug out by Quivira or Wichita Indians more than a thousand years ago.

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