Gehenna

Gehenna is a worse part of afterlife of Imperial Religion, located in the Dark as all afterlifes and god's realms are. It exists on one side of the Aetherial Vortex and Elemental Wastes, while its direct counterpart (The Heavens) are on the other side.
It used to form one, cohesive realm of perpetual pain and agony for the sinners forever punished by Tyrant and the gods that he created (or that were banished from Heavens and told to serve him) to help him in this. This changed during the Shadow's Rebellion, when coalition of his divine servants overthrowned Tyrant and shattered Gehenna into a multitude of smaller realms and dimensions.
There are still connections between them (although their exact nature and looks are unclear to mortals), that are used to fight the bloody and forever War of Gehenna. If prophecies are to be believed, Tyrant will one day reunify the Gehenna. This moment will be the beginning of End Times - a Ragnarok - as he will immediately attack of Heaven, his thirst for absolute domination deepend by millenias spend as merely one of many combatants.

Geography

Gehenna today is divided into a multitude of dimensional planes. Some of them are domains of Imperial Gods of Black Pantheon. Others belong to dark-themed gods of assimilated Vassal Religions. Yet another are unclaimed battlefields, with various forces eternally waging wars to claim them. There are also realms belonging to powerful demigods and other beings serving Black Pantheon.

Major Realms of Gehenna

Evernight - Realm of Shadow, Imperial Goddess of Anarchy, Revolution, Shadows, Night and Moon. Land of perpetual night... and perpetual revolution, overseen by their goddess from the palace on the moon.
Fields of Blood - Realm of Rage, Imperial God of Blood, War, Anger, Conquest and Slaughter. Neverending plains where blood rains from the sky, and homicidal maniacs battle daemons, deities and each other alike for the title of the strongest.
Tower of Blight - Realm of Plague, Imperial Goddess of Pestilence, Plague, Rot and Mold. Partially living tower full of pus, rot and disease, surrounded by lands that are a blasphemous parody of Material World.

Type

Planar Sphere/Grouping

Location under

Dark