Crossword clues for Underworld of myth:HADESUnderworld of mythSTYXRiver of the underworld, in mythSTYXBoundary between the earth and the underworld, in mythCERBERUSMultiheaded dog guarding the gates of the underworld, in mythACHERONRiver to the underworld, in Greek mythHADESUnderworld of Greek mythELMSTrees associated with the underworld in Celtic mythHADESUnderworld king in Greek myth