Собибор
Kurt Gerstein from "Waffen-SS", supplying Zyklon B from Degesch during the Holocaust, wrote after the war in his Gerstein Report for the Allies that on August 17, 1942, at Belzec, he had witnessed the arrival of 45 wagons with 6,700 prisoners, of whom 1,450 were already dead inside. That train came with the Jewish people of the Lwów Ghetto, less than a hundred kilometers away. The last shipment of Jews (including those who had already died in transit) arrived in Bełżec in December 1942. The burning of exhumed corpses continued until March. The remaining 500 "Sonderkommando" prisoners who dismantled the camp, and who bore witness to the extermination process, were murdered at the nearby Sobibór extermination camp in the following months.