Zambia discovery reveals 476,000-year-old wooden structure

Archaeologists have discovered the oldest known wooden structure near Kalambo Falls in Zambia. Dated to approximately 476,000 years ago through luminescence sediment testing, the find consists of two logs joined by a precisely carved U-shaped groove.

The wood shows evidence of being cut, carved, and scraped using stone tools, indicating advanced planning and skill. While the exact function remains unknown, a research team led by archaeologist Larry Barham from the University of Liverpool suggests it may have served as a pathway, a raised platform above seasonal wetlands, or a base for a light shelter.

The structure survived for millennia due to waterlogged, oxygen-free soil that prevented decomposition. Because the find predates the earliest known remains of Homo sapiens and no human bones were found nearby, researchers hypothesize it may have been constructed by Homo heidelbergensis.