Mauthausen concentration camp (main camp): floor plan of the "execution cellar": A–  stairs to courtyard of the Arrest Block; B– stairs to roll-call square; C– stairs to courtyard of the Infirmary Block; D– toilet; E–  lounge and washroom; F– duty room of the SS man in charge of the camp crematorium; G–  engine room (for the air conditioning system of the neighbouring mortuary); H–  dissecting room; I– mortuary; J– execution room; K–  gas chamber; L–  gas cell; M–  equipment room; N–  undressing room; O–  washroom; P–  cellar of the Infirmary Block; 1–  cremation oven no. 1; 2 – dissecting table; 3–  gallows; 4–  neck shooting corner; 5–  location of cremation oven no. 2; 6–  blocked accesses; 7– cremation oven no. 3; 8– lower ground level for oven access. The rooms called "execution cellar" are located beneath the Arrest Block and the Infirmary Block.
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