Monday, October 21
The Great Circle Museum will be open from 10 a.m.–6 p.m.
Octagon Tours
- 10 a.m.
- Noon
- 2 p.m.
- 4 p.m.
Great Circle Tours
Information and Demonstration Tables
Present from 10 a.m.–4 p.m.
- Great Circle
- Flint Ridge Ancient Quarries and Nature Preserve
- Nature imprints
- Pump Drill
- Flint Give-away
- The Works
- The Octagon
- Heartland Earthworks Conservancy
- Hopewell Culture National Historical Park
- Hopewell Ceremonial Earthworks
Presentation
5–6 p.m.
Geometry and Astronomy of the Hopewell Ceremonial Earthworks by Sarah Hinkelman