Biskupin, district of Żnin, 1960. Summer excavation practice for students of archaeology.
From the left: (1) Tadeusz Seniów; (3) Aleksandra Smoleńska;
(4) Jerzy Olczak, MA (Chair of Archaeology, Adam Mickiewicz University in Poznań);
(5) Janusz Spychalski; (6) Lech Krzyżaniak.
Photo: Michał Kobusiewicz.