Unlike many other Nazi camps, Sobibor existed for the sole purpose of exterminating Jews. Most new arrivals were immediately sent to the gas chambers, the rare exceptions being those forced to serve as slave laborers assisting in the operation of the camp. Roughly 200,000 people were murdered at Sobibor,[3] making it the fourth most deadly extermination camp, after Belzec, Treblinka, and Auschwitz.