From PathfinderWiki

Keelwrack is the district that covers the two islands of Dunrock and Keelwrack Island that lies to the east of the rest of the city of Vyre, separated by the shallow Keelwrack Harbor. The two islands are very different in nature: Keelwrack is home to many of the city's government buildings including the architecturally magnificent Vyre Palace; while Dunrock is only home to Dunrock Prison, one of the most notorious prisons in all Avistan.1