Sea of Dorne
el mar de Dorne
The Sea of Dorne is the body of water separating southeastern Westeros from the rest of the continent, framed by the Cape of Wrath to the north, the Narrow Sea to the east, and the coasts of Dorne to the west and south.
Within its waters stands Ghaston Grey, a ruined castle built on a rocky islet that the Crown uses as a prison for the realm's most dangerous criminals.