Inner Planes
The Inner Planes were a subset of the known Planes of Existence in the Great Wheel cosmology model and the World Tree cosmology model. They were the source of the fundamental building blocks of matter and energy for the entire multiverse.
“ Believe what you want―fire still burns and wind still blows. ”
Description
The Inner Planes contained environments that were among the most hostile in the multiverse. Unlike the Outer Planes, which were built on belief and thought, the Inner Planes were the manifestation of central aspects of physical reality. As a result of this intense concentration of reality, everything in the Inner Planes, including its inhabitants, felt more vivid and intense, while at the same time more indifferent.Cosmography
The term "inner" referred to the placement of the planes at the center of the concentric spheres that made up the Great Wheel model. It was also an allusion to the planes' central role in providing the raw stuff that nurtured the multiverse's existence. They could all be reached from the Prime Material Plane by traveling through the Ethereal Plane.Great Wheel Cosmology
There were a total of 18 Inner Planes, which were subdivided into two main groups: six major planes and twelve minor, also called lesser, planes. The six major Inner Planes included the elemental planes, which contained the four basic types of matter that constituted the materials of every other plane, and the energy planes, which consisted of the two main types of energy that governed life and death. The six major Inner planes were:Elemental planes
- Elemental Plane of Air;
- Elemental Plane of Earth;
- Elemental Plane of Fire;
- Elemental Plane of Water;
Energy planes
The twelve minor Inner Planes were located at the intersection between major planes. They could be divided into two main groups: the para-elemental planes, or "paraplanes", which were located at the intersection between elemental planes; and the quasi-elemental planes, or "quasiplanes", which intersected an elemental plane and an energy plane.Para-elemental planes
- Fountains of Creation, or the Plane of Magma, between Fire and Earth;
- Swamp of Oblivion, or the Plane of Ooze, between Earth and Water;
- Frostfell, or the Plane of Ice, between Water and Air;
- Great Conflagration, or the Plane of Smoke, between Air and Fire;
Positive quasi-elemental planes
- Quasi-Elemental Plane of Radiance, between Fire and Positive Energy;
- Quasi-Elemental Plane of Minerals, between Earth and Positive Energy;
- Quasi-Elemental Plane of Lightning, between Air and Positive Energy;
- Quasi-Elemental Plane of Steam, between Water and Positive Energy;
Negative quasi-elemental planes
- Quasi-Elemental Plane of Salt, between Water and Negative Energy;
- Quasi-Elemental Plane of Dust, between Earth and Negative Energy;
- Quasi-Elemental Plane of Ash, between Fire and Negative Energy;
- Quasi-Elemental Plane of Vacuum, between Air and Negative Energy.