Gumelnița–Kodžadermen-Karanovo VI complex
The Gumelnița–Kodžadermen-Karanovo VI complex was a Chalcolithic cultural complex of the fifth millennium BC located in the eastern Balkans, comprising the Gumelnița, Kodžadermen and Karanovo cultures. It is also aggregated with the Varna culture.
Source: Wikipedia — Gumelnița–Kodžadermen-Karanovo VI complex (CC BY-SA 4.0)