Moorehead Circle at Fort Ancient
Moorehead Circle Timber Enclosure · Fort Ancient Moorehead Circle Woodhenge
Middle Woodland Hopewell (c.100 BCE–250 CE) with Fort Ancient reuse·Hopewell → Fort Ancient·🇺🇸 Ohio, Warren County, United States
About
About Moorehead Circle at Fort Ancient
Outer-embankment timber circle 60 m diameter discovered 2007 by magnetometry inside Fort Ancient Hilltop Enclosure (Hopewell 100 BCE–500 CE, later Fort Ancient reuse). Ring of ~200 posts 3 m apart with four gateway openings aligned to cardinal and solstice points, set within plowed plateau; adjacent limestone pavement and burnt-core deposits. No mound—first known Hopewell timber enclosure not earthen. Interpreted as Woodhenge observatory and feasting precinct; overlaid by later Fort Ancient village pits.
Why it mattersOnly large Hopewell timber circle inside hilltop enclosure; decisive for reinterpretation of Fort Ancient as Hopewell rather than solely Late Woodland fort.
Open questions
Mysteries & theories
Mysteries
- 01Why no earthen embankment unlike other Hopewell circles
- 02Seasonality of massive feasting debris
Theories
- 01Solar-lunar calendar regulating Hopewell pilgrimage
- 02Elite initiation precinct within hilltop sacred zone
Theories are interpretations, not findings. The seal above tells you how much scholarly weight the place carries.
History
How it came to be
- Built
- c.100 BCE–150 CE
- Period
- Middle Woodland Hopewell (c.100 BCE–250 CE) with Fort Ancient reuse
- Culture
- Hopewell → Fort Ancient
- Purpose
- Astronomical observatory, ceremonial gathering and feasting
- Excavation
- Partially excavated
c.100 BCE–150 CE
Initial construction
c. 1162 CE
Major expansion
On the ground
Structures & features
39.4028° N · 84.0906° W · 295 m · 2 mapped features
200-post timber circle
woodhenge60 m post circle, 4 gateways, cardinals 0.5 m postholes
39.4029° N · 84.0905° WLimestone forecourt pavement
pavement8×10 m flagstone pavement with burnt feasting pits
39.4025° N · 84.0908° W