The term "nether-worlds" refers to the underworld or the afterlife in many mythologies and religions. Synonyms for this concept include the abyss, the pit, the inferno, the Hades, the Sheol, the Tartarus, the abyssal zone, the subterrane, the nether realm, and the sub-world. These terms evoke an eerie sense of mysticism and unknown depths, where souls are said to be judged, and spirits reside, according to various beliefs. While some of these synonyms favor the idea of a place of punishment or damnation, others focus on the concept of a subterranean realm where spirits and gods dwelt. Regardless of their nuances, they all express the idea of a mysterious otherworld that lies beneath our feet.