Birkenau was a concentration and Death camp. Birkenau is also known as Auschwits 2. It is located South of Hesse in Germany. Birkenau was the largest killing center in Nazi Universe. Birkenau was operated as a death camp March 1942 - January 1945. Birkenau was in a suiburb named Zasole. Out off all the Jews transported to Birkenau 80 per cent of them were sent to immediate death. They first started off with the gas chamber then soon advanced to the crematoria.