This is the opinion of Bulgarian archaeologist Diana Dimitrova, who is a member of the research team that 10 years ago discovered the tomb of Odrysian king Seuthes III. Unlike Amphipolis, Golyamata Kosmatka mound was built by human activity. Another significant difference between the two tombs is their vaults - semi-cylindrical in Amphipolis and cantilevered arched in Golyamata Kosmatka.