What metaphors are used in Late and Deep by Paul Celan?

Guilt is an underlying metaphor in the narrative. Celan's life and work show the influence of guilt. Perhaps this experience is an example of "survivor's guilt," which may have led to his suicide, like that of his contemporary Primo Levi. There are several levels of guilt in this poem. First, the poet himself may feel guilt that he has survived the Holocaust when so many, including his parents, have perished.