

The Abyss is only infinitely deep but it isn’t infinitely wide, which means that it does occupy a finite amount of space, sort of. Plain and simple, no one's ever done so because each layer is so horribly grotesque that a berk would have to be barmy to want to see any of them.ģrd edition only clarifies that the Abyss has an infinite number of layers, but that each known layer has clear boundaries, which is some small comfort. The book later goes on to clarify that the number might be infinite, but nobody knows and the Planescape Campaign Setting (1994) even goes so far to say that nobody will ever do so in a rather illuminating way. It is first described as having only 666 layers, though it does clarify that that is only an estimate, this number jumps up to 679 in 2nd edition in the Planes of Chaos (1994) with only 141 of the layers actually habitable by mortal beings. Historyįirst detailed in the Manual of the Planes (1987), not much has changed for the Abyss. Due to the assumed infinite number of layers on this plane, it can be difficult to know exactly where you are when you take a conduit, though several layers have been ‘civilized’ by the demons and actively encourage, and protect, traders to their cities. Some layers might only have one-way portals and be impossible to escape until someone, typically a powerful abyssal lord, releases you or the conduit might take you to a world that appears to be the Material Plane except that the plants feed off of blood instead of sunlight. Littering the top layer of the plane are conduits that lead to almost every layer in the Abyss, though few are marked and even fewer are reliable. The plane itself shares many of the same traits as demons, though it acts in a far more devious manner. The demons and other evil creatures who roam these layers see the only way to gain more power is to enforce their will over others, be it by enslaving them to the demon armies in the Blood War or to use violence to impose their will. Found between the windswept plane of Pandemonium and the prison plane of Carceri, this plane is considered to be mildly evil and mildly chaotic, though that doesn’t mean it’s safe by any stretch of the imagination.


The Infinite Layers of the Abyss, sometimes known as Demonholde, is the home plane of demons and is known for being infinite in size and depth.
