Harbour geoarchaeology of Lechaion (Corinth area, Greece) sheds new light on economics during the Late Bronze Age/Early Iron Age transition

Lechaion in Corinth, Greece, is the largest ancient port in Greece. Harbour geoarchaeological investigations, based on C-14-dated palaeoenvironmental archives taken from a well-studied inner basin (Basin 3) and a still unknown outer basin (Basin 4), revealed anthropogenic lead excesses starting from the 12th century BCE, associated with brown coal fragments, for the first time discovered in such an ancient archaeological context. Given that historical sources trace the foundation of the port back to the 7th century BCE, these results attest to protohistoric industrial use of the site and push back its chronology by over five centuries. The existence of such ancient port activity not only extends the chronological horizon for harbour activity in the Corinthian area, but also provides new insights for the Late Bronze Age/Early Iron Age (LBA/EIA) transition, including potential trading routes that may have transited through Lechaion, likely spanning across the Gulf of Corinth and possibly even beyond, to western Mediterranean urban centers.