At the beginning of time, called the Age of Dragons, three proginator dragons fought. Proud Siberys was slain by dark Khyber, who in turn was bound by vibrant Eberron. The scattered remains of Siberys, the Siberys became the ring that encircles the world. The body of Eberron, the Eberron formed the seas and continents. Under the surface, the bones and blood of Khyber, the Khyber, created labyrinthine passages.