The Newfound Evidence of the Oldest Remains of Architecture of Chalcolithic Period in Kurdistan Province (Based on Archaeological Excavations)

Archaeological excavations Tepe Gheshlagh have been helpful in understanding Chalcolithic sites in the high region separating the East Central Zagros and the Southern Lake Urmia Basin. Though cultural interface between the two regions was alluded to in the earlier publications, nothing was known of the existence of intermediate sites between them. Tepe Gheshlagh is a site at the center of Talvar valley that as a natural corridor serves to bring the concerned regions into closer contact, and its archaeological data will contribute to reconstruction of interactions of the regions in the Chalcolithic period. The Tepe Gheshlagh is one of the few settlements of the ancient villagers in the Talvar valley of the Bijar City, dating back to the fifth millennium BC (Ancient, Middle, and Late Chalcolithic period) which according to the Thermoluminescence tests it has been settlement form 5500 BC to 3600 BC without any interruption. Performing three seasons of archaeological excavations in this site provides us valuable information about the cultural and archaeological conditions of the region. This site have around one hectare, and during the settlement is formed ancient deposit more than 14 meters.