▁fragments ▁on ▁the ▁flo ors ▁of ▁many ▁of ▁the ▁pit - h ouses ▁suggested ▁( based ▁on ▁their ▁depth ▁in ▁the ▁soil ) ▁at ▁first ▁that ▁the ▁pot tery ▁was ▁made ▁and ▁those ▁houses ▁were ▁occupied ▁in ▁the ▁later ▁occupation ▁period ▁of ▁the ▁settlement . ▁Ex c av ation ▁of ▁the ▁pit - house ▁designated ▁" gr uben haus ▁No . ▁ 8 " ▁however ▁precip itated ▁a ▁sharp ▁concept ual ▁turn ▁amongst ▁many ▁research ers ▁towards ▁the ▁belief ▁that ▁the ▁pit - h ouses ▁may ▁largely ▁have ▁been ▁built ▁much ▁earlier , ▁and ▁this ▁suggests ▁that ▁the ▁famous ▁Great ▁Bas il ica ▁may ▁have ▁been ▁built ▁after ▁rather ▁than ▁before ▁the ▁majority ▁of ▁the ▁pit - h ouses , ▁meaning ▁it ▁may ▁not ▁have ▁been ▁built ▁in ▁AD ▁ 8 6 4 ▁as ▁long ▁supposed , ▁but ▁instead ▁as ▁late ▁as ▁the ▁later ▁t enth ▁century . ▁ ▁Modern ▁Pl iska ▁ ▁The ▁ru ins ▁of ▁the ▁city ▁of ▁Pl iska ▁lie ▁ 3   km ▁north ▁of ▁the ▁modern ▁village ▁of ▁Pl iska . ▁The ▁site ▁of ▁the ▁city ▁is ▁currently ▁a ▁National ▁Arch ae ological ▁Reserve . ▁Ru ins ▁of ▁the ▁Great ▁and ▁the ▁Small ▁Palace , ▁the ▁strong ▁stone ▁fort ifications ▁and ▁the ▁Great ▁Bas il ica ▁( c . ▁ 8 7 5 ), ▁used ▁both ▁as ▁a ▁royal ▁church ▁and ▁as ▁a ▁national ▁patri arch al ▁c athedral , ▁can ▁be ▁seen ▁in ▁the ▁reserve . ▁ ▁Under ▁Ott oman ▁rule , ▁the ▁village ▁known ▁as ▁Pl