The most important archaeological developments reported in Türkiye in September 2026 included several discoveries that significantly expanded knowledge of Anatolia's prehistoric and ancient past. At Çayönü Tepesi, archaeologists uncovered a roughly 9,000-year-old mining workshop with malachite, copper objects, and a stone-paved working area, offering rare evidence for the organization of early metal production. At Troy, excavations revealed a 2,800-year-old agora, while at Hattusa a newly identified cuneiform fragment was recognized as part of a surviving copy of the Kadesh Peace Treaty. At Aspendos, finds beneath Roman shops pushed the known settlement history of the site back to about 6,000 years ago, while excavations at Yassıtepe Höyük revealed further evidence for a fortified, planned settlement dating to roughly 5,000 years ago. Another major discovery came from a roughly 2,100-year-old shipwreck off Antalya, where thousands of ceramic vessels shed new light on ancient Mediterranean trade in tableware. Finally, research at Göbeklitepe produced evidence potentially relevant to the long-standing question of the site's human remains, while work at Liman Tepe and Maydos Kilisetepe added important evidence for sophisticated water management and defensive architecture in prehistoric western Anatolia.