The glaciers atop Puncak Jaya, also known as the Carstensz Pyramid in Indonesia’s Papua region, are on the verge of disappearing entirely. Once a permanent feature of the Sudirman Range, the ice cover has dwindled from approximately 1,900 hectares in the 19th century to just 16 hectares today. Experts anticipate that the remaining ice will vanish within the next two years.
Czech glacier ecologist Marie Šabacká, who recently visited the site to document the final stages of the ice, described the situation as profoundly unfair. She noted that these tropical glaciers are unique, serving as the last remaining ice between the Andes and the Himalayas. Because they are located only 450km south of the equator, they exist within a precarious climatic balance. As global temperatures rise due to human activity—specifically the burning of fossil fuels—the freezing point has shifted higher, causing precipitation to fall as rain rather than snow. While El Niño events can accelerate this decline, the primary driver remains a warming atmosphere.
For scientists, the loss represents more than just a climate indicator; it is the destruction of a vital archive. Ice cores from Puncak Jaya have provided researchers with essential data on atmospheric conditions and the warming waters of the tropical Pacific. However, this record is being lost before it can be fully studied. Danish researcher Klaus Thymann, who has used drones and 3D mapping to track the retreat, reports that the glaciated area has shrunk by 95% since the early 2000s. "There's almost no ice left. Those are the facts," he stated.
Beyond the scientific loss, the melting of the glaciers carries deep spiritual consequences for Indigenous Papuan communities. For groups like the Amungme and Moni, the mountain is a sacred site. The Amungme refer to the range as Nemangkawi, or the "White Arrow," a symbol of moral integrity and purity. Amungme activist Adolfina Kum compared the loss of the mountain’s sacred character to the destruction of religious centers like Mecca or the Vatican, noting that the community risks losing its cultural foundation. "I often describe it as pulling out the roots of a tree. Once the roots are removed, the tree loses its foundation," she said.
This environmental shift is occurring against a backdrop of significant industrial change in Papua. The 20th-century discovery of massive copper and gold deposits led to extensive mining operations, such as the Grasberg mine operated by Freeport. While residents acknowledge that industrial development has brought infrastructure, education, and jobs, it has also resulted in environmental degradation and the loss of access to ancestral lands. Elfrida Natkime, an Amungme woman, reflected on this duality: "Since the company came, I have seen the exploitation. But the development has also provided a livelihood for many people."
