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 plat ...

island An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An isla ...

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. It is separated from New Britain by the Dampier Strait and Huon Peninsula, 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 Torres ...

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