"Archeological excavations and precise date recognition at the historical site of Gohar Tappeh revealed that urbanism had entered the region about 4,500 years ago," said Ali Mahforouzi, head of the excavation team of Gohar Tappeh of Mazandaran.
"If we believe in the theory that urban dwelling occurred after agrarian, we could claim settlement in Mazandaran province dates back to at least 5,600 years ago," said Mahforouzi.
"We believe the powerful economic system was based on agriculture, animal husbandry, and trade - all among the basics of industry at the time," he said.
"The history of pre-agrarian dwelling goes back to cave-dwelling era. There was a 3,800-year-old gap between cave and agrarian dwelling in the region though," Mahforouzi said.
Earlier on Thursday it was also announced that the second phase of archeological excavations of Iran's Kelardasht Mound, also in Mazandaran, has led to the discovery of earthenware which contains lead.
"The lead was found in a metal ring in the earthenware," said head of the archaeology team in Kelardasht Mehdi Mousavi.
According to Mousavi, the latest study conducted on the ring revealed that almost 95 percent of the ring contained lead.
"Finding lead in the Iron Age layer is one of those rare discoveries. It is the first time archeologists have discovered such a thing," he explained