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Explaining the evolution of prehistoric trade systems dominates archaeological research in the Papuan Lowlands of New Guinea. However, important evidence in the form of ground stone axes, which had to be imported into this region, is largely ignored. This paper provides a summary of relevant ethnographic accounts of axe exchange systems, describes the archaeological finds from a restricted area near Kikori Station using sourcing and morphological analyses and interprets the meaning and significance of results. As this is a radical departure from traditional studies, we take this opportunity to sketch some major research questions which may aid future investigations.