The Zeffonians, an ancient society, crafted circular artifacts known as astriums. A surviving astrium was interred inside the tomb of Kujet located on the world of Dathomir. This particular astrium functioned as the means to unlock the Zeffo Vault situated on Bogano. Within this Vault, Eno Cordova, a Jedi Master with a deep interest in the Zeffo civilization, concealed a holocron. The holocron contained data regarding Force-sensitive young individuals, information intended to be used to rebuild the Jedi Order following the Great Jedi Purge.