Long Island (Papua New Guinea)

Long Island
Highest point
Elevation	1,280 m (4,200 ft)
Prominence	1,280 m (4,200 ft)
Coordinates	5°21′S 147°7′E / 5.350°S 147.117°E / -5.350; 147.117
Geography
Long Island Location in Papua New Guinea
Location	Papua New Guinea
Geology
Mountain type	Complex volcano
Last eruption	November 1993

Long Island (known locally as Pono,^[1] and as Arop or Ahrup on the New Guinean mainland) is a populated volcanic island in Madang Province, Papua New Guinea. It is located north of the island of New Guinea, separated from it by the Vitiaz Strait. The island's interior contains a 360 m-deep (1,180 ft) freshwater volcanic crater lake and within that lake exists an even smaller island known as Motmot island. During the late 17th or early 18th century virtually all of the biota on the island was destroyed and has subsequently provided scientists a unique opportunity to study recolonization efforts by plants, animals, and humans. The vast majority of the buildings on the island are constructed using vernacular architecture.