Where does Eliezer think he is being sent?

In "Night," Eliezer Wiesel initially thinks he and his family are being sent to a safer place, possibly a relocation for work. As they are transported in the cattle cars and treated with increasing cruelty, he realizes that they are actually being taken to a concentration camp, where the reality of their situation becomes increasingly dire and terrifying. His hope quickly turns to despair as he confronts the horrific conditions they face.