One notable myth that involves a deity descending to the underworld to rescue a loved one is the story of Persephone in Greek mythology. Hades, the god of the underworld, abducts Persephone, leading her mother, Demeter, to grieve. Her eventual return to the surface symbolizes the cycles of life and season, encapsulating themes of love, sacrifice, and reunion. This myth illustrates the interconnection between the realms of the living and the dead, as well as the impact of personal loss on nature.