Carceri

In the Dungeons & Dragons fantasy role-playing game, Carceri (more fully, the Tarterian Depths of Carceri; also, Tarterus or The Red Prison) is a neutral (chaotic) evil-aligned plane of existence. 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.

The plane known as Tarterus 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 planes of Tarterus of evil chaotic neutrals".

Carceri has six layers, contained inside each other not unlike the shells of a matryoshka doll. Each layer consists of a series of orbs floating in an infinite black void. Light is provided by the orbs only; as one progresses through the layer, the light diminishes, and the orbs are separated by larger and larger distances.

The Bastion of Lost Hope, a fortress controlled by the Revolutionary League, can be found on Carceri.

Skullrot, an asylum run on behalf of the Demon Lord Graz'zt by his lich-fiend lieutenant, Dark Myrakul, may also be found on Carceri. The fallen Celestial Adimarchus is currently imprisoned here, exiled from his role as Demon Lord of the 507th Layer of the Abyss, Occipitus.

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