TEHRAN – A collection of stone tools unearthed at Sahachay Tepe in Iran’s Zanjan Province is offering archaeologists a more intimate glimpse into how Chalcolithic communities made their tools, shared technical knowledge and maintained cultural connections across the Zagros.
The study, by Mojgan Jayez of the University of Tehran and Roghieh Rahimi Sorkhani of the University of Mazandaran, examines the technological and typological character of the site’s stone-tool assemblage and places it within the broader cultural and technological transformations of the Zagros during the Chalcolithic period.
Published in IRAN: Journal of the British Institute of Persian Studies, the research compares Sahachay Tepe’s stone industries with those of contemporary sites across the Zagros. The comparison reveals a familiar technological vocabulary, alongside distinctive features that may point to local traditions of tool production and contact between prehistoric communities.
For archaeologists, those differences are more than variations in stone and technique. They offer clues to how knowledge moved between communities in the fifth millennium B.C., when people across the region were developing and refining ways of shaping stone into practical tools.
The evidence from Sahachay Tepe therefore helps illuminate not only how tools were made, but how technological knowledge itself traveled — carried between communities through contact, exchange and cultural interaction.
The findings add to the growing archaeological picture of Chalcolithic Iran, suggesting that the Zagros was a landscape of interconnected communities whose technologies shared common foundations while retaining distinctive local expressions.
In that wider picture, Sahachay Tepe emerges as an important site for tracing the cultural and technological networks that linked prehistoric societies across the Iranian Plateau and the Zagros.