netherworld
noun
°The place to which one's spirit descends upon death, conceived as below the surface of the earth.
"In some religions, one's soul departs to a netherworld, hell, instead of the heavens."
°The locale of the spirit world or afterlife, whether deemed to be situated below the world of the living or not.
"While I was astrally projecting, I felt my soul pass through many insubstantial netherworlds."
synonyms: hades, hell, nether region, underworld more» , astral plane, heaven, damnation