The first known humans in the region of Kyiv lived there in the late paleolithic period (Stone Age). The population around Kyiv during the Bronze Age formed part of the so-called Trypillian culture, as evidenced by artifacts from that culture found in the area. During the early Iron Age certain tribes settled around Kyiv that practiced land cultivation, husbandry and trading with the Scythians and ancient states of the northern Black Sea coast. Findings of Roman coins of the 2nd to the 4th centuries suggest trade relations with the eastern provinces of the Roman Empire. The people of the Zarubintsy culture are considered the direct ancestors of the ancient Slavs who later established Kyiv. Notable archaeologists of the area around Kyiv include Vikentiy Khvoyka.