Psychological Meaning: The underground usually symbolises the unconscious. Things that are uncovered, dug up or emerge from the ground, represent qualities that are coming from the unconscious. If it is repressed material then these images frighten us and may appear as zombies, rats or monsters. If you dream of exploring caves or mines this may show how you are discovering the inner most recesses of the unconscious.
Mystical Meaning: To dream of being in the subway predicts a loss of money.
My Dream Book Trilogy
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