Bodies of prisoners are stacked like cordwood on a truck just outside the incinerator plant at Buchenwald concentration camp in this Margaret Bourke-White photograph. One Canadian pilot recalled his first entry to Buchenwald: "As we got close to the camp and saw what was inside ... a terrible, terrible fear and horror entered our hearts. We thought, 'What is this? Where are we going? Why are we here?' And as you got closer to the camp and saw these human skeletons walking around -- old men, young men, boys, just skin and bone, we thought, 'What are we getting into?'"