Immediately after the liberation of Kraków, dr. Rudolf Jamka, informal leader of Kraków archaeology during the war (in 1932, a doctorate from Włodzimierz Demetrykiewicz, the founder of the Department of Prehistoric Archaeology at the Jagiellonian University), became involved in the campaign to secure museum collections in Upper Silesia, which had been devastated by war operations, and later, as the frontline moved, in Lower Silesia. In May 1945, he arrived in Wrocław, which was still burning, and here he built Polish archaeology from scratch, establishing the Department of Prehistory at the University of Wrocław; after he obtained his habilitation in 1947, it was transformed into the Department of Prehistory. Didactic classes in prehistory began here as early as early December 1945. He also organized the Prehistoric Museum, of which he became the director, and in June 1946, he opened the first exhibition on the territory of Polish Wrocław devoted to the prehistory of Silesia.