It has been discovered that a transcendental traveler, upon magically
entering the Ethereal Plane of Atrii
can easily return to the real world via
magic curtains specially designed to provide a one-way trip. These
Dimension Doors are seen as closed curtains hanging suspended in midair.
It is known that the enchantress Y'Gael
had at least four portals that were dimension doors (or similar to them) in her Gurth City
, and Festeron