 "Stolperschwellen" are installed at Stralsund main station.From there, 1,160 mentally ill persons were deported in December 1939, victims of the forced euthanasia program Action T4, and murdered in Wielka Piaśnica.Other "stolperschwellen" commemorate female forced labourers from Geißlingen, who were imprisoned in the Natzweiler-Struthof concentration camp, the victims of the Holocaust in Luxemburg in Ettelbrück, forced laborers in Glinde and Völklingen, victims of forced euthanasia in Merseburg, and the first deportees, Roma and Sinti from Cologne.