The snow-capped mountains of Papua, located just north of Australia near the equator, have held glaciers for centuries that served both as climate records and sacred sites for Indigenous communities. A century ago, the Sudirman Range’s four major peaks were all covered in snow and permanent ice, but today only small remnants remain around Puncak Jaya, also called Carstensz Pyramid. Scientists expect these remaining glaciated areas to vanish entirely in approximately a year or two.
The decline has been dramatic by measurable standards. Glacier coverage has contracted from approximately 1,900 hectares in the 19th century to roughly 16 hectares currently, representing a 95% reduction from the early 2000s through 2025. Marie Šabacká, a glacier ecologist, notes that Papua’s tropical glaciers are unique because they exist in isolation from other glacier systems, separated by thousands of kilometers, and represent the last remaining tropical ice between the Andes and Himalayas. Ice cores extracted from the mountain slopes contain valuable climate history data, but this archive is disappearing before scientists can fully analyze it.
The glacier retreat follows global patterns driven by atmospheric warming caused by human activities, including fossil fuel combustion. At Papua’s equatorial latitude, where permanent ice can only exist at extremely high altitudes within narrow climatic conditions, even modest temperature increases can prove fatal to glacier survival. Rising freezing points cause more precipitation to fall as rain rather than snow, while El Niño events can accelerate the process.
Beyond scientific implications, the disappearing ice carries profound cultural significance for Indigenous Papuan groups including the Moni and Amungme peoples. The Amungme call the range Nemangkawi, or the “White Arrow,” viewing it as a symbol of honesty, purity and moral integrity central to their spiritual beliefs and ancestral traditions. The glacier’s loss occurs alongside broader landscape transformations driven by copper and gold mining operations that have reshaped entire mountain faces and valleys, creating economic opportunities while generating environmental degradation and social conflict over ancestral land access.
Researchers including Danish glaciologist Klaus Thymann are documenting what remains using drone technology and three-dimensional mapping. Local communities and activists emphasize that the disappearance of sacred landscapes disrupts cultural foundations and removes important spiritual anchors, comparing the loss to destruction of sites central to other world religions.
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