the six camps that were considered to be extermination camps From across Europe located in occupied Poland

Nazi Germany primarily used six extermination camps, also called death camps, or killing centers, in Eastern Europe during the Holocaust in World War II to systematically murder millions of Jews.

Explanation:

I'm not sure exactly what you need but here's all 6 of the Polish Camps!

Chelmno, Belzec, Sobibor, Treblinka, Auschwitz-Birkenau and Majdanek.