18 September 2015 – opening day of the exhibition Yatvings. The Forgotten Warriors at the Public Library in Jeleniewo, Podlaskie voivodeship. The ceremony was attended by some sixty guests, next to the Marshal of the Podlaskie voivodeship, the commune authorities, library staff and residents of Jeleniewo, by the team from the State Archaeological Museum (PMA) in Warsaw who organized the exhibition and many guests, e.g., from the Museum of Warmia and Mazury in Olsztyn, the District Museum in Suwałki, the Museum of Archaeology and History in Elbląg, the University of Warsaw Institute of Archaeology and the Polish Academy of Sciences Institute of Archaeology and Ethnology in Warsaw. The guests were welcomed by Kazimierz Urynowicz,  Mayor of Jeleniewo Commune, followed by dr Wojciech Brzeziński and dr hab. Anna Bitner-Wróblewska, PMA Director and Head of the Department of Balt Archaeology respectively. Dr Marcin Engel (PMA) introduced the subject of Yatving archaeology research to the public and showed them around the exhibition.