DiscoveriesBioarchaeologyArchaeological Science
Bosutswe Metalwork Reveals Long-Distance Copper Trade and Local Bronze Making
Lead-isotope analysis of 30 metal objects from Iron Age sites in Botswana indicates that copper reached Bosutswe from mines across southern Africa. Bronze objects consistently point to the Rooiberg valley in South Africa for their tin, suggesting bronze was produced locally from materials acquired through separate trade networks.
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