The Bastion, also known as Orth prison, is a remote prison fortress located on the moon Orth. It is operated by the Caelus Security and is made up from the damaged remains of an Imperial I-class Star Destroyer of the same name that had served as the former lead ship of the imperial Garrison stationed within the Caelus System before the fall of the Galactic Empire with well organized groups of inmates utilizing the Bastion for black market operations, selling spare parts from the Bastion through out the system.