Gehenna (Dungeons & Dragons)

In the Dungeons and Dragons fantasy role-playing game, Gehenna (in the current edition of the game, the Bleak Eternity of Gehenna; also, The Fourfold Furnaces or The Fires of Perdition), is a plane of existence of neutral evil/lawful evil alignment. It is one of a number of alignment-based Outer Planes that form part of the standard Dungeons & Dragons (D&D) cosmology, used in the Planescape, Greyhawk and some editions of the Forgotten Realms campaign settings. It borders the Gray Waste of Hades and the Nine Hells of Baator.

The plane known as Gehenna was mentioned for the first time by name in the article "Planes: The Concepts of Spatial, Temporal and Physical Relationships in D&D", in The Dragon #8, released July 1977. The plane was mentioned again in an appendix of the known planes of existence in the original (1st edition) AD&D Players Handbook, published in June 1978, where it was described as "The furnaces of Gehenna of lawful evil neutrals".

The yugoloths call Gehenna home, and are its primary natives, though they originally hail from the Gray Waste - they dominate both planes, but in Gehenna their rule is more overt and in the Waste more subtle. The Tower of the Arcanaloths is also found on Gehenna. The leader of their race, known only as the General of Gehenna, moves his Crawling City from layer to layer according to his will. The City moves on thousands of fireproof legs and may climb the face of any cliff.

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