. ▁ ▁The ▁site ▁is ▁located ▁in ▁the ▁waters hed ▁of ▁the ▁James ▁River . ▁ ▁It ▁contains ▁the ▁remains ▁of ▁a ▁pre histor ic ▁fort ified ▁site , ▁which ▁was ▁last ▁inhab ited ▁about ▁ 1 0 0 0 ▁CE . ▁ ▁Arch ae olog ists ▁have ▁assigned ▁it ▁to ▁the ▁Lower ▁James ▁Ph ase ▁or ▁Initial ▁Middle ▁Missouri ▁Ph ase ▁of ▁the ▁Middle ▁Missouri ▁Trad ition . ▁ ▁The ▁site ▁is ▁one ▁of ▁four ▁sites ▁that ▁form ▁part ▁of ▁this ▁phase ▁that ▁exhib it ▁fairly ▁int ensive ▁usage ▁patterns , ▁and ▁differ ▁in ▁their ▁cer am ics ▁from ▁surrounding ▁sites . ▁ ▁The ▁region ▁was ▁largely ▁abandoned ▁about ▁ 1 3 0 0 , ▁in ▁part ▁due ▁to ▁the ▁relatively ▁poor ▁quality ▁of ▁the ▁land , ▁which ▁contributed ▁to ▁a ▁sparse ▁settlement ▁pattern ▁at ▁the ▁time . ▁ ▁Find s ▁at ▁the ▁site ▁include ▁the ▁remains ▁of ▁blue - wing ed ▁te al . ▁ ▁At ▁the ▁time ▁of ▁the ▁land mark ▁design ation ▁in ▁ 1 9 6 4 , ▁it ▁was ▁stated : ▁ ▁See ▁also ▁List ▁of ▁National ▁Historic ▁Land marks ▁in ▁South ▁Dak ota ▁National ▁Register ▁of ▁Historic ▁Places ▁list ings ▁in ▁Hans on ▁County , ▁South ▁Dak ota ▁ ▁References ▁ ▁Category : Arch ae ological ▁sites ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁South ▁Dak ota ▁Category : National ▁Historic ▁Land marks ▁in ▁South ▁Dak ota ▁Category : Ge ography ▁of ▁Hans on ▁County , ▁South ▁Dak ota ▁Category : National ▁Register ▁of ▁Historic