Mound 72 woodhenge area showing celestial relationships between Mounds 72 and 96.

Fowler, M. L. 1996. The Mound 72 and woodhenge 72 Area of Cahokia. In The Ancient Skies and Sky Watchers of Cahokia: woodhenges, Eclipses, and Cahokian Cosmology. Wisconsin Archaeologist. 77(3/4):36-59. Fig. 4.8, p.48

Image courtesy of The Wisconsin Archaeologist.