Legend attributes the construction to , a high-magus of the First Era. History remembers him as a man obsessed with "absolute isolation." Driven by a grief that has been lost to the annals of time, Estras sought to create a sanctuary where he could study the fundamental fabric of reality without the intrusion of the physical world.

Deep within the shifting sands of the Aethelgard Reach lies a structure that defies both logic and time: the . Part architectural marvel, part metaphysical prison, the Labyrinth has served as the ultimate siren song for explorers, occultists, and historians for centuries.

Today, the Labyrinth of Estras remains a focal point for the . They believe that at the very heart of the maze—the "Sanctum of Estras"—lies the Void-Core , a power source capable of providing limitless energy.