The ancient complexes of the Early Bronze Age culture of Armenia are concentrated in the Kur and Araks basins. At the end of the lV century, the Kur-Araks culture spread in the southwestern regions of the Armenian Highlands, in Iran and in the North Caucasus. No culture that originated in the Armenian Highlands has developed like Kur-Araksyan. The reason for the unprecedented spread was ethnic shifts. Since the middle of the XIX century, the Sevan-Artsakh culture, mainly represented by settlements, has spread in the east and northeast of the highlands (Syunik, Artsakh, Sevan and Aghstev Valley). In Armenia, the Iron Age began in the II millennium. The highlands, rich in iron reserves (Syunik, Mush, Khnus, etc.), became the main supplier of raw materials in Asia and occupied a dominant position. Among the famous monuments of the Iron Age are Metsamor, Shamiram, Dvin and Red Hill.