A gray concrete wall covered with white scratch marks

A gray concrete wall covered with white scratch marks. The marks are names and dates, including "Tom 2015," "2017," and "Kevin." The coordinates are 50.033 latitude, 19.179 longitude. Brzezinka, Poland. The wall is located in the former Auschwitz II-Birkenau concentration camp in Oświęcim, Poland, also known as Brzezinka, where a former German prisoner of war left his mark.