In general: If a dream of the depth acts, the dreaming is occupied as a rule at an unaware level with informal influence of the past. Psychologically: Maybe the dreaming tries to understand the archetypal patterns which were not recognizable in the past yet. His knowledge possibly helps the dreaming only if he associates it with the right feelings. Spiritually: At the spiritual level depth in the dream is a tip to the stranger or unfathomable. Popular: (arab).: is sometimes good it, in itself hineinzuhorchen. (See also abyss)