In various mythologies, the underworld is depicted as a realm for the dead, often governed by specific deities. For instance, in Greek mythology, it is ruled by Hades, with complex structures like the River Styx and distinct areas like Elysium and Tartarus. In Egyptian mythology, the underworld is known as Duat, a place for the deceased to navigate, judged by Osiris. Similarly, in Mesopotamian tales, the underworld is dark and dreary, with divine overseers. Each culture's depiction reveals their understanding of life and death, focusing on the moral implications of one's actions.