Sobibor extermination camp
Lager IV was added in July 1943. Because it was north of the other camps, Lager IV was also called the Nordlager ('north camp'). It was located in a heavily wooded area. The Nazis wanted to develop the area as a munitions depot for processing weapons taken from captured Red Army soldiers. However, it was still being built when Sobibor closed after the prisoners' revolt.