The Elemental Chaos is a realm of elemental realms, where earth, fire, wind and water clash. It is within this realm that the Efreeti city, the City of Brass, a major trade hub, sits. Within the Elemental Chaos, bordered by a dark and terrible storm, is the Infinite Layers of the Abyss.
This plane is not closely tied to the mortal world and it's parallels - rather, it is a maelstorm that has the occasional floating content that is home to various elemental forces. [1]