netherworld

Etymology
From.

Noun

 * 1) 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, instead of the heavens.
 * 1) 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.
 * 1) Specifically, a location of punishment in the afterlife; a hell.
 * The missionary was motivated by a sincere desire to rescue souls from eternal torment in the netherworld.
 * 1)  A hidden, shadowy, or sinister subculture, such as that of organized crime.
 * Richard had been initiated into the netherworld of dog racing by his father, and knew all the popular greyhound performance-enhancing drugs.
 * Richard had been initiated into the netherworld of dog racing by his father, and knew all the popular greyhound performance-enhancing drugs.

Usage notes
Depending on cultural context, it may be appropriate to construct this as the netherworld, if only one is supposed to exist.

Translations

 * Danish: underverden
 * Finnish:
 * French: ,
 * Hittite: 𒋼𒂊𒈾𒌋𒉿𒀸
 * Hungarian:
 * Japanese:
 * Latin: infera, Orcus
 * Lü: ᦵᦙᦲᧂᦕᦲ
 * Maori: Rarohenga
 * Polish: