This culture was one of the earliest iron-using archaeological settlements in South India. Megaliths were the burial monuments for important tribal figures. In these monuments we find different implements like stone and iron tools which were needed for daily existence. They were found around river valleys, important trade routes and strategic places. In the different districts of South India we have discovered megalithic monuments. Many inscriptions of the Mauryan king Ashoka have been found in these regions where megalithic sites have been discovered. The people followed a primitive kind of agriculture. They were used to move from place to place. Primitive form of exchange existed between the different tribal groups. These settlements indicate the beginning of use of iron for the purpose of production. It is said that they belonged to the period around 5th century BC.