With its 320 square kilometres, Hiva Oa is the second largest island in the Marquesas Islands, in French Polynesia, an overseas territory of France in the Pacific Ocean. Located at 9 45' south latitude and 139 W longitude, it is the largest island of the southern Marquesas group. Around 2,200 people reside on the island. A volcano, Temetiu, is Hiva Oa's highes…With its 320 square kilometres, Hiva Oa is the second largest island in the Marquesas Islands, in French Polynesia, an overseas territory of France in the Pacific Ocean. Located at 9 45' south latitude and 139 W longitude, it is the largest island of the southern Marquesas group. Around 2,200 people reside on the island. A volcano, Temetiu, is Hiva Oa's highest point with 1,200 metres.