Unearthing the Past: Recent Findings at the Lost City of Cahokia Mounds

9. Presence of an Astronomical Observatory

One of Cahokia’s most intriguing discoveries is “Woodhenge,” a circle of wooden posts that functioned as a solar calendar. Used to mark equinoxes and solstices, this ancient observatory showcases astronomical knowledge comparable to Stonehenge. It underscores the cultural significance of celestial events for Cahokians. Learn more at the Cahokia Mounds State Historic Site.