Inner Planes

Beyond the Ethereal Plane are the Inner Planes, also known as the Elemental Planes. They are closest connected to Eden and its echoes, providing the raw elemental and physical substances from which the worlds are made. The Elemental Planes are: Eltofa, Plane of Earth; Falae, Plane of Water; Symfar, the Plane of Air; Zynth, the Plane of Fire.
The Elemental Planes are similar to the Prime in the areas where they are closest to the Ethereal Plane's borders. They have land and sky, and separate elements, but the further in you travel, the more pure and elemental they become. Eventually, they are merely the purest form of themselves, and it is in this deepest fold that elementals are born.
The Planes also bleed into each other as they do into the Ethereal Plane. These mini planes are similar to the "child" planes of other systems, but they connect two planes. The Plane of Ice bridges Air and Water, the Plane of Ooze bridges Water and Earth, the Plane of Magma bridges Earth and Fire, and the Plane of Smoke bridges Fire and Air.