The Astral Plane

A Transitory Plane, the Astral Plane is an infinite expanse of empty nothingness which lies between the other planes. Parts of the Astral located near to another plane resemble it, with vague white mist becoming thicker and colors in the landscape becoming rarer the deeper you move into the Astral, until it bears no resemblance to that plane.

The parts of the Astral Plane nearest to another plane are sometimes referred to as the Ethereal Plane.