preserved iron heater and scratches on the wall

annihilation architecture auchwitzbirkenau auschwitz auschwitzbirkenau barrack barracks beds birkenau block blocks board brick bricks building buildings camp carving cell childrens complex concentration cracovia cracow criminal death defense die europe exterminate extermination final flooring force furniture gas genocide german germany guard gypsy heater heinrich himmler history hitler hunger interior iron konzentrationslager krakow labor level linear marks museum nazi old one poland preserved prison prisoners red remember rudolf ruins scratch scratches sickens solution tourism undefined vintage visiting wall wood