The Courbet Peninsula (Péninsule Courbet) is a large peninsula occupying the northeastern portion of the principal island, Grande Terre, of the subantarctic Kerguelen Archipelago of the southern Indian Ocean. On the south coast of the peninsula is the French research station of Port-aux-Français, the only permanent settlement in the archipelago. Molloy, 10 km to the west of Port-aux-Francais along the north shore of the Gulf of Morbihan, is the site of a former observatory, established on 7 September 1874, by an American expedition led by G. P.