Winter Solstice at Aztalan State Park – Lake Mills, Wisconsin
Source – Prehistoric Geometrical-Based Art Work on the Ground: Wisconsin’s Effigy Mounds, published by the Ancient Earthworks Society, Inc., Madison, WI, Oct. 1991.
Aztalan; Mysteries of an Ancient Indian Town by Robert A. Birmingham and Lynne G. Goldstein
Indian Mounds of Wisconsin by Robert A. Birmingham and Leslie E. Eisenberg
Buy a video of the Aztalan State Park
