Khartoum (The Sudan), January 1987.
From the left: (3) Marek Chłodnicki, MA (Poznań Archaeological Museum);
(4) Michał Kobusiewicz, Ph.D. (head of the Department of Archaeology of Greater Poland
and Pomerania, Institute of History of Material Culture, Polish Academy of Sciences);
(5) Lech Krzyżaniak, Ph.D.