125,000-Year-Old Weapons Reveal Advanced Hunting Techniques in Arabia
A new analysis of artifacts from ‘Uruq Aljelibah, near an ancient freshwater lake in Saudi Arabia’s Mundafan region, is changing the picture of how early humans used the Arabian Peninsula. The site dates to 125,000 years ago, when wetter Pleistocene conditions created temporary lakes, grasslands and wooded habitats in an otherwise often arid landscape. These freshwater pockets attracted gazelles, hippopotamuses, buffalo, camels and oryx, as well as people.
Professor Christopher Clarkson of Griffith University’s Australian Research Center for Human Evolution and colleagues reexamined more than 5,500 stone artifacts, animal fossils and preserved organic residues. Several stone points showed impact damage consistent with hunting large animals. Microscopic analysis also identified animal tissue, plant resin and fibers at the bases of some points, indicating that they were attached to shafts or other components. The weapons were therefore composite hunting tools rather than simple handheld stones.
The most unexpected evidence came from chemical analysis of the projectiles. Researchers detected biomarkers associated with Acokanthera schimperi, known as the arrow-poison tree because it contains toxic cardiac glycosides. The finding suggests that some of the weapons may have been poison-tipped. Together, the hafting and poison evidence indicates that early Homo sapiens remained in the region long enough to develop specialized techniques suited to concentrated wildlife and scarce freshwater resources, challenging the view that Arabia was only a route between Africa and Asia.
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