River deltas, Papua New Guinea, satellite image. North is at top. The rivers, flowing from inland through dense jungle and vast swamp plains (green), slow and deposit their sediment as they reach the sea (blue). The sediment forms the deltas seen here. These are the deltas of the rivers Hawooi (left) and Kikori (right), on the western part of the coast of the Gulf of Papua, Papua New Guinea. This area is around 150 kilometres across. Image data obtained on 31 October 1988.
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