Mount Wilhelm in the context of "Bismarck Range"

Puncak Jaya (Indonesian: [ˈpuntʃak ˈdʒaja]; literally "Victorious Peak", Amungme: Nemangkawi Ninggok) or Carstensz Pyramid (/ˈkɑːrstəns/, Indonesian: Piramida Carstensz, Dutch: Carstenszpiramide) on the island of New Guinea, with an elevation of 4,884 m (16,024 ft), is the highest mountain peak of an island on Earth, and the highest peak in Indonesia and within Oceania. The mountain is located in the Sudirman Range of the highlands of Mimika Regency, Central Papua, Indonesia. Puncak Jaya is ranked 5th in the world by topographic isolation.

When regarding New Guinea as part of the Australian continent in a biogeographical sense, Puncak Jaya can be considered the highest peak in all of Oceania, with its elevation exceeding those of the highest peaks in the nearby nations of Papua New Guinea (Mount Wilhelm), New Zealand (Aoraki / Mount Cook) and Australia (Mount Kosciuszko). Puncak Jaya is therefore often listed as one of the Seven Summits. However, since Puncak Jaya is in Western New Guinea, an area administered by Indonesia and therefore geopolitically part of Southeast Asia, the peak can also be considered the 8th highest mountain in this region, after Hkakabo Razi and six others in Kachin State, Myanmar.

Jiwaka is a province of Papua New Guinea. The government gazetted provincial capital is located in Kurumul. Temporarily all provincial matters are handled in Minj after the election of the new Governor in 2022 general elections. Matters concerning each district are dealt with at their respective district administration office.

The province covers an area of 4,798 km², and there are 343,987 inhabitants (2011 census final figures—2000 census 185,641). Jiwaka province officially came into being on 17 May 2012, comprising three districts previously part of Western Highlands Province. Mount Wilhelm, the tallest mountain in Papua New Guinea, is on the border of Jiwaka.

Chimbu, also spelled Simbu, is a province in the Highlands Region of Papua New Guinea. The province has an area of 6,112 km and a population of 376,473 (2011 census). The capital of the province is Kundiawa. Mount Wilhelm, the tallest mountain in Papua New Guinea is on the border of Eastern part of Simbu and the Western part of Madang Province.