On the Table of Fate
Ringed about the prime material plane lie the outer planes, home of the gods. The outer planes float in the void of the astral plane, ringed about the prime material plane according to alignment, with law and chaos, good and evil, facing one another across the astral void. Annwn lies in the center of this wheel, acting as the convergence point between all ideologies. It is important to note, however, that although the outer planes are fundamentally linked to the prime material plane, they do not contact it directly. To reach the outer planes from Annwn, only two methods exist. Beings powerful enough to survive prolonged exposure to the astral plane can float through the void, thus arriving directly at the plane of choice. Only the most powerful of beings are capable of this endeavor, and for the rest, travel must occur through the plane of shadows, via the River of Souls.