The Jayawijaya Mountains, formerly known as the Orange Range, are the eastern mountain range

Mountain range

A mountain range is a single, large mass consisting of a succession of mountains or narrowly spaced mountain ridges, with or without peaks, closely related in position, direction, formation, and age; a component part of a mountain system or of a mountain chain...

 of the Maoke Mountains in the central highlands region of the Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

n part of New Guinea

Western New Guinea

West Papua informally refers to the Indonesian western half of the island of New Guinea and other smaller islands to its west. The region is officially administered as two provinces: Papua and West Papua. The eastern half of New Guinea is Papua New Guinea.The population of approximately 3 million...

. The range extends for 230 miles east of the Sudirman Range

Sudirman Range

The Sudirman Range or Dugunduguoo or Nassau Range is a mountain range in Papua province, Indonesia.Located at , it comprises a western portion of the Maoke Mountains. The highest peak in Oceania and Australasia, Puncak Jaya , is located here, as well as the large Grasberg copper and gold mine,...

 to the Star Mountains

Star Mountains

The Star Mountains are a mountain range in western Papua New Guinea, stretching from the border with Indonesia, at about to the Hindenburg Range...

. Its highest point is Trikora Peak

Puncak Trikora

Puncak Trikora, until 1963 Wilhelmina Peak, is a 4730 or high mountain in the Papua province of Indonesia on New Guinea. It lies in the eastern part of the Sudirman Range of the Maoke Mountains. Behind Puncak Jaya at , it is either the second or third highest mountain on the island of New Guinea...

 at 4,750 meters (15,580 feet). The Baliem River has its source in the range.

Inhabitants of the range include the Ketengban.

In 1997 sightings of animals matching the description of the thylacine

Thylacine

The thylacine or ,also ;binomial name: Thylacinus cynocephalus, Greek for "dog-headed pouched one") was the largest known carnivorous marsupial of modern times. It is commonly known as the Tasmanian tiger or the Tasmanian wolf...

, an extinct Australia

Australia

Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

n marsupial

Marsupial

Marsupials are an infraclass of mammals, characterized by giving birth to relatively undeveloped young. Close to 70% of the 334 extant species occur in Australia, New Guinea, and nearby islands, with the remaining 100 found in the Americas, primarily in South America, but with thirteen in Central...

were reported from "the Jayawijaya region of Irian Jaya".