Expalin the imagery of drakness and light as it is used on the train ride to the middle of Germany

In Chapter Seeven, the night is described as long and never ending." Eliezer does not want to die immediately because to him the distinction between life and death has become irrelevant. He is currently experiencing a living hell, and as he repeatedly remarks, the surviving prisoners are now no better than corpses. Everyone is dying, some more quickly than others, and the darkness of night has taken over the day. In this passage Wiesel once again expands on the symbolic meaning of the title Night. "Night" here refers to the living death of the concentration camps that Eliezer does not think will ever end.