Umboi (also named Rooke or Siassi) is a

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates ...

island An island or isle is a piece of subcontinental land completely surrounded by water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be ...

between the mainland of

Papua New Guinea Papua New Guinea (abbreviated PNG; , ; tpi, Papua Niugini; ho, Papua Niu Gini), officially the Independent State of Papua New Guinea ( tpi, Independen Stet bilong Papua Niugini; ho, Independen Stet bilong Papua Niu Gini), is a country i ...

and the island of

New Britain New Britain ( tpi, Niu Briten) is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi the D ...

. It is separated from New Britain by the Dampier Strait and

Huon Peninsula Huon Peninsula is a large rugged peninsula on the island of New Guinea in Morobe Province, eastern Papua New Guinea. It is named after French explorer Jean-Michel Huon de Kermadec. The peninsula is dominated by the steep Saruwaged and Finiste ...

, and

New Guinea New Guinea (; Hiri Motu: ''Niu Gini''; id, Papua, or , historically ) is the world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Australia by the wide Torr ...

by the

Vitiaz Strait Vitiaz Strait is a strait between New Britain and the Huon Peninsula, northern New Guinea. The Vitiaz Strait was so named by Nicholai Nicholaievich Mikluho-Maklai to commemorate the Russian corvette '' Vitiaz'' in which he sailed from October ...

. It has an elevation of . Languages are Papuan Kobai; and Austronesian: Mbula, Karanai, and Saveng languages. The Siassi Archipelago lies off the southeast coast of Umboi Island (a total of 18 islands, only seven are inhabited). During the mid-1920s, the population of the Siassi Islands was a little over 700 people. It had more than doubled (to almost 1700 people) by the early 1960s, and then decreased to a little more than 1600 people by the early 1980s. The Siassi support themselves through traditional trade based on a barter system; they are important middlemen who deliver pigs, pots and wooden bowls by sea in their canoes.The Influence of Overseas Trade on Housing Quality Among the Siassi of Papua New Guinea
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References

Islands of Papua New Guinea Volcanoes of Papua New Guinea Subduction volcanoes Complex volcanoes Morobe Province {{MorobeProvince-geo-stub

See also

References