Sachsenhausen Concentration Camp was a Nazi concentration camp used firstly for prisoners from 1936 and then throughout World War II up until 1945. It is located 35km north of Berlin and around 200,000 people passed through the camp between 1936 and 1945. Executions happened and were mainly of the Soviet prisoners. These were usually carried out in a trench by hanging or shooting but later the introduction of gas chambers meant more prisoners could be killed at once. Even though the purpose of the camp was not originally for murdering inmates, over 30,000 prisoners died from the terrible conditions inside, or by execution.