The first of the planes is the world in which humans and other mortals are born and have their existence. The world often is known only by its name: Avala. In reference to the planes, the world is sometimes known as “the prime plane,” “the mortal realm,” “the natural world,” or “the middle world,” to distinguish it from the supernatural realms surrounding it.
Close by the mortal world lie its echoes, the parallel planes: the Feywild and the Shadowfell. Parallel planes are strange copies of the material world. Where seas and mountains lie in the world, similar seas and mountains exist in these parallel planes. Yet they are not perfect copies. A thriving human city in the mortal world might be a forested vale in the Feywild and a haunted ruin in the Shadowfell. It seems that the Feywild’s version of a locale in the natural world is a pristine memory of what that place was like in the youth of the world, whereas the Shadowfell’s version shows a vision of how that same spot will look when its people pass away and it falls into ruin.