 4 Sida lagu ogaaday cilmibaadhis aarkiyooloji ah, geedka shunburada waxaa laga beeran jiray caalamka wakhti aad u dheer oo lagu qiyaasay ilaa 7,500 sano deegaano ka mid ah deegaanada Carada Nafaqeysan ee Bariga Dhexe. 