The “Seminar on the Border” which gathered migrations researchers and activists, was held in the village Gruszki, at the border of Poland and Belarus, in Białowieża Forest from April 21st to April 24th. The work was organized through presentations and discussions as well as visits of the relevant locations in the area. The participants of the seminar had the opportunity to learn about the work of the border researchers and activists’ network. The seminar was organized by Researchers on the Border, Centre of Migration Research, University of Warsaw, the Institute of Ethnology and Folklore Research Zagreb, Laboratory for Critical Migration and Border Regime Research, University of Gottingen and the Institute of Slavic Studies, Polish Academy of Sciences. Marta Stojić Mitrović, PhD, senior research associate of the SASA Institute of Ethnography participated at the Seminar with the presentation “Becoming an external border of the EU: Serbia, as part of the Western Balkans”.