On the east African coast, called Azania, the chief town, which may lie buried in the Rufiji delta of present-day Tanzania. Rhapta's main imports were metal weapons and iron tools - suggesting that iron smelting According to the Periplus of the Erythraean Sea, who wrote in the first few centuries AD, this was the southernmost port of the East African coast to which voyagers from the Mediterranean world at that time penetrated. From documentary evidence it is possible that Rhapta was located in the general vicinity of the modern Dar es Salaam, perhaps in the delta of the Rufiji River.