ic ▁settlement s ▁were ▁discovered ▁in ▁connection ▁with ▁the ▁construction ▁of ▁the ▁lake ▁qu ai ▁assets , ▁and ▁Gro ff ried ▁K eller ▁pointed ▁to ▁a ▁variety ▁of ▁dwell ing ▁posts . ▁Then after ▁the ▁find ings ▁were ▁considered ▁forgotten . ▁Under ▁the ▁leadership ▁of ▁the ▁former ▁city ▁arch ae ologist ▁and ▁pione er ▁of ▁under water ▁arch ae ology , ▁Dr . ▁Ulrich ▁Ru off , ▁the ▁redis cover y ▁of ▁the ▁pre histor ic ▁island ▁settlement ▁occurred ▁on ▁ 2 4 ▁ ▁December ▁ 1 9 6 6 . ▁D iving ▁exc av ations ▁were ▁executed ▁from ▁ 1 9 8 1 ▁to ▁ 1 9 8 4 ▁to ▁study ▁the ▁strat ig raph y ▁of ▁the ▁Ne ol ith ic ▁settlement ▁remains . ▁In ▁the ▁two ▁exc av ation ▁campaign s , ▁the ▁div ing ▁team ▁found ▁the ▁nearly ▁complete ▁furn iture ▁of ▁the ▁vill agers : ▁pot tery ▁cook ing ▁vessels ▁and ▁storage ▁vessels , ▁tools ▁made ▁of ▁b one , ▁ant ler ▁and ▁fl int , ▁stone ▁axes , ▁rem n ants ▁of ▁text iles ▁and ▁j ew el ry ▁made ▁of ▁animal ▁teeth ▁or ▁stone ▁be ads . ▁In ▁the ▁later ▁phase ▁of ▁the ▁European ▁Bron ze ▁Age ▁settlement , ▁there ▁the ▁divers ▁found ▁bronze ▁axes , ▁kn ives , ▁fish ing ▁hook s ▁and ▁j ew ell ery . ▁ ▁Furthermore , ▁about ▁ 3 , 0 0 0 ▁p iles , ▁anch oring ▁and ▁other ▁tim bers , ▁hear th s ▁made ▁of ▁cl ay