Figure 27: Schematic diagram of Zyklon holes and air vents of Crematorium I gas chamber. "X" marks approximate location of the photographer who took the image in Figure 28 (see further discussion below). Distance between left edge of Z4 and right edge of Z5 is 8.5 m. © Holocaust and Genocide Studies, Oxford University Press, Volume 18, Number 1, Spring 2004, pages 68-103. Used with permission. [an error occurred while processing this directive]