(ritual bath). The archeological survey was conducted after the war by OttoDoppelfeld from 1953 to 1956. On the basis of the awareness of history the area
(1868-1954), librarian and founder of the German national bibliography OttoDoppelfeld (1907-1979), archaeologist Heinz-Horst Deichmann (1926-), entrepreneur
the cathedral. At his suggestion, OttoDoppelfeld was entrusted with this task in 1945. As early as 1946, Doppelfeld found parts of the previous building