Archaeological sites identified by studies of 2010–2021 on the territory of Nakhchivan made it possible to supply the gap between the Late Neolithic and Eneolithic Chalcolithic periods. The presence of ancient Eastern features – Halaf and Obeid ones – is noted in the materials of Nakhchivan Tepe, Uçan-Ağıl, Bulovkaya and Uzunoba. It can be assumed that the settlements of Nakhchivan Tepe and Bulovkaya were strongholds or colonies of newcomers – bearers of Middle Eastern cultural traditions.