Ursa Luna Penal Facility is a Double-Max security prison, sometimes informally known as Slam City. Riddick was brought along with four other male inmates from Ursa Luna. On his way to escape he encountered the Shiners. He also met Cutter, a doctor there who is thought to have performed on him the eyeshine surgery for 1,000 UDs but settled for a packet of 20 menthol Kool cigarettes (as a "down payment"). The Prison Chief hired William J. Johns to capture Riddick and to take him to Hubble Bay Penal Facility. Because as the Chief says "We are scared shitless of him!"