Elemental Plane of Fire

Of all the Inner Planes, it's the plane of Fire that inspires true fear in all but the most addle-coved traveler. Sure, there are other planes that're worse, like life-sucking Negative Energy Plane or the impassable Elemental Plane of Earth, but these just don't have the sheer theatrical horror and evil feel of the plane of Fire. With its leaping flames, scorching heat, and choking brimstone smoke, it's no surprise that gullible primes often mistake this plane for one of the layers of Baator or Carceri. Still, few doubt the plane of Fire is the most evil of all the Elemental Planes, though that's purely a judgment call. Fire's probably the most powerful of the Elemental Planes, for it attacks and consumes its enemies, just because they're there.

The plane of Fire is separated from the Elemental Plane of Air by the Paraelemental Plane of Smoke, and from the Elemental Plane of Earth by the Paraelemental Plane of Magma. Where the plane of Fire meets the Positive Energy Plane is the Quasielemental Plane of Radiance, and where it meets the Negative Energy Plane is the Quasielemental Plane of Ash.

Note: The Elemental Plane of Fire originally appeared in the Planescape AD&D campaign setting from TSR. Its use here is for the purposes of providing context for the campaign only.