Fire Emblem: The Age of Legend
It is often depicted as an enormous cavern underground, but sometimes is instead a magical realm of some sort. Theories and theology about it abound since the First and Second Generations seemed to have no memory of it. Sekeriah himself could offer nothing but the surety that he and his kind had come from elsewhere once. The term “The Old Place” is often attributed to him and was not the only name for it before his became popularized.