The Infinite Fortress is an Astral Dominion.


The plane is a never ending palace with twisting corridors, mighty arches, and grand chambers.

This plane may be accessed through the mortal world via an entrance in the tallest mountain in Agrilia.

The Astral Sea also touches this plane, as does Sigil


It was created in ancient times by Agrilnost and it is here that he died.

When Ator entered the world he took up his residency here. Eventually when he passed into a different form he left the plane to Defluo as repayment for his imprissonment.