Umboi Island

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Umboi Island seen from space. Also visible is Sakar Island. (false color)
Umboi Island seen from space. Also visible is Sakar Island. (false color)

Umboi (also named Rooke or Siassi) is a volcanic island (with no recent volcanism) between the mainland of Papua New Guinea and the island of New Britain, at 5.628885° S 147.935898° E. It is separated from New Britain by Dampier Strait and has an elevation of 1,548 m

Umboi is a Holocene complex volcano with no historic eruptions. A complex volcano refers to the extensive assemblage of spatially, temporally, and genetically related major and minor volcanic centers with their associated lava and pyroclastic flows. It is said (by some natives and by some American investigators) to be the home of the ropen, a nocturnal bat-like creature that eats fish.


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