Within of the center, not even chemical reactions take place, and neither man nor deity can get closer than. The First Edition Manual Of Planes states that the center of the plane takes various forms at different times (a mountain, a huge tree, etc.) and godly powers are lost as one moves toward the center, as well as spells, beginning with the highest levels of spells at the farthest out and then gradually losing the lower ones step by step the further one moves inward. In first edition and second edition AD&D before Planescape, this plane is also at the center of the Outer Planes and known by its original name Concordant Opposition.
