The Far Realm
The Far Realm is the place outside existence and logic. It defies man to understand even the smallest fact about it and trying to induces madness. It is not bound by the rules of science, physics, or magic as we know it. Some have said it’s like multiple dimensions stacked on top of each other with beings existing on multiple unfathomable dimensions simultaneously thus creating an illusion of being in 3 dimensions while not at the same time. No one seeks this place for the road here is madness.
All that can be said for sure is that this is the source of hideous aberrations and home of the Old Ones. Malevolent beings whose alien ambitions and mere physical presence will destroy a mortals mind. Even the gods know not what lurks here or what they want.