- He sees the prisoners being rounded up and marched to work details, their faces gaunt and their heads shaven. Bruno is shocked by the sight of these people being treated like cattle.
- He sees the smoke rising from the crematorium, where the bodies of the prisoners who died or were killed are burned. Bruno is not sure what is going on, but he knows that it must be something terrible.
- He sees the prisoners being beaten and abused by the guards, and he witnesses one of the guards shooting a young boy who tried to escape. Bruno is horrified by the cruelty and violence he sees.
- He sees the prisoners being marched off to the gas chambers, where they are killed in large numbers. Bruno does not fully understand what is happening, but he knows that it is something very wrong.
Bruno's experiences in the concentration camp open his eyes to the dark side of humanity and the horrors of the Holocaust. He becomes aware of the terrible things that are happening around him, and he begins to question the values and beliefs that he has always taken for granted.