The results of excavations on the flat settlement site and the tell at Polgar-Csoszhalom have complemented the knowledge of the Late Neolithic within the East Slovakian Plain substantially. The pottery from Zemplin in association with black-painted pottery represents a special group in the northern Tisa region. Its genesis as well as the historical and chronological positions is still unclear, but it is not a part of the Csoszhalom-Cicarovce group, it is older. The author discusses the development after the Bukk culture extinction. On its former area in the northern Tisa region and in the upper Vistula region after the sudden extinction of the Linear Pottery culture as well, cultural integration had appeared which resulted in formation of an independent syncretic cultural unit represented mostly by pottery from the finding places at Polgar-Csoszhalom (the flat settlement), Izkovce, Velke Raskovce and from the settlement sites of the Samborzec-Opatow group. This was an independent cultural entity along with the Tisa culture, Herpaly group and the Lengyel culture as well. It lasted probably only within the Lengyel IB stage. Then the completely different group of Polgar-Csoszhalom replaced it without any obvious continuity.