Stolpersteine, or stumbling blocks commemorating individual victims of the Holocaust, have been placed in Ostrava on the pavement outside the houses where the local Holocaust victims lived before WWII, Town Hall spokeswoman Andrea Vojkovska told CTK Thursday. The 10x10cm large stones carry brass plates with the dates of the victims’ birth and death in concentration camps, she added. The idea was brought by the offspring of the local Jewish families that moved from Ostrava over the war.”They took part in the unveiling of a memorial to the Holocaust victims near the Ostrava main railway station last November. On this occasion they asked the town for a permission to place ‘Stolpersteine’ there,” Vojkovska said. A total of 27 stones have appeared in the Ostrava districts of Moravska Ostrava, Privoz and Vitkovice.