The executions in Palmiry were carefully planned by the Gestapo deployed in Warsaw. A few days before the transport, a department of the Reich Labour Service, located in nearby Łomna, sometimes also units of the Hitler Youth camping near Palmiry, excavated pits suitable for mass graves in the clearing. These pits were about 2.5 m deep and 30 m long. The victims to be shot were usually taken from the Warsaw Pawiak prison, and rarely from the Mokotów prison in Rakowiecka Street on trucks to Palmiry. Most of the Poles murdered here belonged to the Polish Inteligencja. The climax of the shootings was reached within the framework of the Poland-wide AB Actions.