Assaf Golav was a prison planet operated by the Romulan Star Empire during the 2370s decade, located omewhere in the galaxy's Alpha or Beta Quadrants. Assaf Golav's Romulan overseers were known for being extremely cruel. In the year 2379, Poyaran was sent to this prison for a year after attempting to "steal" a chalice from Eborion. (TNG novel: Death in Winter)