Dor-en-Ernil (Sindarin for "Land of the Prince") is a tributary kingdom of Gondor and home to the Swan Knights. The mighty city and port of Dol Amroth is situated within these lands. Similarly to Rohan, Dor-en-ernil is a great place for a fortress or base to due to the uncanny amounts of extremely powerful mounted mobs which evil players always dread. Upon entering this biome, the player earns the achievement "Land of the Prince".