English: 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– until 1942 coke chamber, from 1942 lounge and washroom for prisoners of the crematorium team; F– SS duty room (for head 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 furnace no. 1; 2 – dissecting table; 3– gallows; 4– neck shooting installation until 1942; 5– neck shooting installation from 1944; 6– location of cremation furnace no. 2 (in operation from early 1942 to early 1944); 7– blocked accesses; 8– cremation furnace no. 3; 9– lower ground level for oven access. The rooms called "execution cellar" are located beneath the Arrest Block and the Infirmary Block. (See also: Bertrand Perz, Christian Dürr, Ralf Lechner, Robert Vorberg: Die Krematorien von Mauthausen. Katalog zur Ausstellung in der KZ-Gedenkstätte Mauthausen. Wien 2008, ISBN 978-3-9502183-8-1, p. 48)