Cahokia Woodhenge
Círculos de postes solares de Cahokia (Woodhenge)
- Date
- c. 1100 · confidence medium
- Place
- Cahokia, Collinsville, Illinois, United States
- Credited to
- Mississippian culture
- Field
- Cosmos & Earth
⚠️ Disputed: the sources disagree.
What was discovered
Circles of large cedar posts rebuilt several times, whose posts mark sunrise at the solstices and equinoxes when viewed from a central post. It accompanied the largest city north of Mexico before 1492.
An Indigenous contribution. Excavated by Warren Wittry (1961); the astronomical function of each circle is debated.
What it led to
- the Mississippian ceremonial calendar
- North American archaeoastronomy