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.