Figure 11a: First (southernmost) Zyklon hole, overview
Figure 11b: detail. Overview taken from south looking north. Observe square form, with no rebar present; although damaged in explosion, hole clearly visible. Detail taken from below, looking up and east at the northeast corner, showing residue of dripping tar. Surviving crawl space approx. three feet here
© Holocaust and Genocide Studies, Oxford University Press, Volume 18, Number 1, Spring 2004, pages 68-103. Used with permission.