The Gas Chambers were located at all of the extermination camps. Prisoners were moved into a room or a gas chamber where they would be killed. The process went like this. The men and women were not told that they would be killed. They were told that they needed to be disinfected before heading back to camp so they would get undressed and then they would be locked in the gas chamber. The guards were put on there gas mask and then the extinction would begin. The gas they used was called Zyklon B. This gas was used in pretty much all the gas chambers in the extermination camps. This was the most disturbing part of all of the parts during the concentration camps.