Mauthausen concentration camp
Common methods of extermination included hangings, mass shootings, beating prisoners to death, and starving them to death in bunkers. Sometimes, guards would kill a prisoner by throwing them on the 380-volt electric barbed wire fence. At other times, they would force a prisoner outside the boundaries of the camp, accuse the prisoner of trying to escape, and shoot them. The Nazis also used icy showers to kill people. Around 3,000 inmates died of hypothermia after guards forced them to take icy cold showers, then left them outside in cold weather. A large number of inmates were drowned in barrels of water at Gusen II. Starting in 1942, the Nazis also used gas chambers to kill at least 3,500 prisoners, starting with Soviet prisoners of war.