Cahokia Woodhenge Vortex

• Vortex Type: Spiritual

  Archaeologists discovered postholes during excavation of the site to the west of Monks Mound, revealing a timber circle. Noting that the placement of posts marked solstices and equinoxes, they referred to it as "an American Woodhenge", likening it to England's well-known circles at Woodhenge and Stonehenge. - Wikipedia