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 alignment with lawful evil tendencies. Gehenna is selfish exploitation incarnate, a plane where self-determination is replaced by rule by those with with the most will and wits at the expense of everyone else. Nothing is equal here; those who succeed only do so due to the suffering of others.




Gehenna consists of four planar layers; each layer consists of a a huge volcano floating in space, hundreds of thousands of miles tall. Smaller mountain-shaped chunks of earth also float through Gehenna, occasionally colliding with the primary mounts. There is no ground level in any of the four layers.
The first layer, Khalas, is a hot and fiery place, and the second layer, Chamada, is even more volcanic, but the volcanos gradually grow colder as one passes through the layers; the third layer, Mungoth, is a cool place, while the fourth, Krangath, is icy and dead.
Khalas borders the Outlands, Baator, and the Gray Waste. Portals to these planes are deep beneath the surface of Gehenna, appearing as black chasms in cave floors. There is a portal from Sigil that dumps slag onto Gehenna from a subterranean foundry (Blood Hostages, 121).



Khalas is the location of a number of godly realms, including the kobold deity Gaknulak's realm of Aknuthrak, the wererat god Squerrik's realm of Cheisin, Math Mathonwy's realm of Corriegrave, and Sung Chiang's realm the Teardrop Palace.


Chamada is the location of a number of godly realms, including the giant deity Memnor's realm of Thraotor and Sargonnas' realm the Palace of Deception. It also contains the realms of the dead gods Iyachtu Xvim (Bastion of Hate), and Maanzecorian (Rictus). The town of Nimicri can also be found floating above the second layer.


Mungoth is the location of the lich god Velsharoon's realm Death's Embrace and Loviatar's realm Ondtland.


Krangath is the location of the orc god Shargaas' realm the Night Below. It is also home to Hopelorn, Mellifleur's obsidian citadel.




Cavers are large, slothlike creatures native to Gehenna.

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