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Medieval descriptions of journeys to the Other World often contain a temporal distortion which their protagonists experience personally; the movement in the space lead them to cross a temporal border also, so that their return to the earthly space does not coincide with the return to the time which they left; the time lived in the Other World turns out very reduced or very expanded regarding the one lived in this world; these distortions are analogous to some implications of the theory of relativity.
