How did the Holocaust gas chambers work?

Answer:
inside the room there were things on the ceiling, not like the ones at schools that spray water during a fire, but like big shower heads. The people walked in and poisonous gas would be thrown in and fill the room to kill everyone who inhaled it. Then their bodies were burnt in giant cremation oven type thing and the ashes were disposed of in the local rivers.
Contributor: Rissa
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