Along with the White Mountains and the Ephel Duath, the Bay of Belfalas (S."Iawaer-i-Belfalas) defined the natural boundaries of southern Gondor. From Ras Morthil on the tip of Andrast in the west to Hyarmendacil's Cape south of Umbar, the windy Bay of Belfalas shielded southern Gondor from the endless waves of the Belegaer beyond. Named after the rocky peninsula of the princes, the bay was said by the Dúnedain to be a dwelling place of Uinen the Maia, guardian of Pelargir and the line, of Imrazôr of Dol Amroth , whereas the violent waters of Belegaer were reckoned to be the province of her husband Osse. When the two quarreled, storms ravaged the otherwise relatively placid waters of Belfalas Bay.