Iroquois Earthen Fort on Their Western Frontier in Northern Indiana
Horseshoe shaped forts can be found from eastern Indiana back in to New York. The dates of these earthen Iroquois forts date to about 800 A.D.
An identical horseshoe shaped earthwork can be found along the St. Joseph River in Allen county, Indiana. The parallel walls of this fort are still intact, yet it is not recognized as a historic site by the county or state historical socieities.
