GUNUNG · Papua New Guinea

Mount Bosavi

Information

Elevation: 2.507 m
Country: Papua New Guinea (PG)
Location / Range: Great Papuan Plateau, cekungan Sungai Kikori — Provinsi Hela/Southern Highlands, Papua Nugini
Mountain type: Kerucut gunung berapi punah yang runtuh (collapsed cone) dengan kaldera/kawah raksasa di Great Papuan Plateau
Volcanic?: Yes — volcano
Coordinates: -6.6142, 142.8267
Difficulty: Sangat sulit & terpencil — bukan pendakian rekreasi biasa; akses lewat ekspedisi (jalan kaki berhari-hari melalui hutan hujan dari kampung Bosavi atau diturunkan helikopter ke tepi/dasar kawah)
Best Season: Musim yang relatif lebih kering (sekitar Mei–September); kawasan ini sangat basah sepanjang tahun
Permits & Rules: Perlu izin & kesepakatan dengan pemilik tanah adat (masyarakat Bosavi/Kaluli) serta koordinasi logistik ekspedisi; sebagian masuk Sulamesi Wildlife Management Area
Hazards: Terpencil ekstrem tanpa fasilitas, hutan hujan lebat & licin, tebing dinding kawah ~1 km, penyakit tropis, cuaca basah; navigasi & evakuasi sangat sulit

Description

Mount Bosavi (~2,507 m) is the collapsed cone of an extinct volcano on the Great Papuan Plateau, in the Kikori River basin of Papua New Guinea. What makes it remarkable is its crater: a caldera roughly 4 km wide with walls nearly 1 km deep, forming an isolated world within. That isolation made Bosavi globally famous through the BBC 'Lost Land of the Volcano' expedition (2009), when scientists descended into the crater and documented a number of endemic and previously undescribed species — most famously the cat-sized Bosavi woolly rat. The mountain's northern slopes are home to the Bosavi kalu people — the Kaluli, Ologo, Walulu and Wisesi groups — long studied by anthropologists. Part of the area lies within the Sulamesi Wildlife Management Area (2006) and is included in the proposed UNESCO World Heritage Site of the Kikori River Basin/Great Papuan Plateau. Bosavi is not a recreational climb: reaching it requires a heavy-logistics expedition through rainforest or by helicopter.

Gallery

Foto bersumber dari Wikimedia Commons — klik untuk memperbesar & lihat sumbernya.

Routes

Akses ekspedisi ke kawah Bosavi (helikopter + trekking berpemandu)

Ekstrem/terpencil — bukan jalur rekreasi; menuntut dukungan ekspedisi, pemandu lokal, dan perizinan tanah adat

Ekspedisi berhari-hari (bukan pendakian sehari) — bergantung logistik penerbangan dan cuaca

There is no conventional walking route up Mount Bosavi. Access is normally by expedition: visitors are flown in by helicopter over the rainforest canopy to the Bosavi area, then make a guided trek with Indigenous communities (such as the Kasua) along community-developed routes into the forest/crater area. Because the crater is ~4 km wide with walls nearly 1 km high, any descent to the crater floor is a scientific-expedition undertaking rather than ordinary tourism. All visits require customary landowner permission and serious logistical and medical preparation.

Source

Climbing Experiences

Mount Bosavi is almost never climbed for recreation; its 'experiences' are scientific expeditions and their coverage. The best-documented is the BBC 'Lost Land of the Volcano' expedition (2009), when a team descended into the ~4 km-wide crater and documented dozens of endemic and previously undescribed species — including the giant Bosavi woolly rat and a new silky cuscus — many showing no fear of humans. Media reports (CNN, Phys.org/AFP, The Register) confirm the finds, while a local expedition operator describes access to the Bosavi area by helicopter and guided trekking with Indigenous communities. Together they underline Bosavi's character as a remote 'lost world' rather than an ordinary trail.

References

The summary above is compiled from the following sources. Click to explore them yourself.