Papua's 'Eternal Snow' Melts Away, Signaling Climate Change Impact
Once-permanent glaciers on Indonesia's Puncak Jaya are disappearing, impacting scientific research and Indigenous spiritual beliefs.
The 'eternal snow' capping the mountains of Papua, Indonesia, is on the verge of vanishing forever, a stark indicator of the planet's warming climate. These tropical glaciers, situated near the equator, have long been a source of invaluable climate data and hold deep spiritual significance for Indigenous communities.
Glacier cover on the Sudirman Range, which once stretched across 1,900 hectares (4,700 acres) in the 19th century, has now shrunk to approximately 16 hectares (40 acres) today. Scientists anticipate that the remaining snow and ice patches around Puncak Jaya, also known as Carstensz Pyramid, will disappear within the next one to two years.
Marie Šabacká, a Czech glacier ecologist, noted the profound unfairness of this loss, emphasizing that Papua's glaciers are unique due to their isolation from other glacier systems by vast distances. These glaciers represent the last remaining tropical ice between the Andes and the Himalayas. The ice cores preserved within them offer a historical record of atmospheric conditions and changes in the surrounding tropical waters, an archive that is disappearing before it can be fully studied.
Proof of a Warming Planet
The rapid retreat of these glaciers is attributed to the same global warming forces affecting ice worldwide, primarily driven by the burning of fossil fuels. As temperatures rise, the freezing point elevates, causing more precipitation to fall as rain rather than snow, even at high altitudes. While El Niño events can accelerate this process, local factors like cloud cover and topography also play a role.
Šabacká explained that on mountains near the equator, permanent ice can only survive under very specific and narrow climatic conditions. Even a minor temperature increase or a shift from snowfall to rainfall can determine a glacier's survival. The disappearance of these glaciers serves as tangible evidence of long-term global warming, simultaneously eliminating vital biological habitats and a significant part of a culturally important landscape.
A Spiritual Anchor
For at least five Indigenous groups, Puncak Jaya has been a sacred site for generations. The Amungme people refer to the range as Nemangkawi, meaning 'White Arrow,' symbolizing honesty, purity, and moral integrity. Adolfina Kum, an Amungme activist, compares the loss of Nemangkawi to the destruction of Mecca for Muslims or the Vatican for Catholics, emphasizing the potential shattering of traditions and cultural foundations.
The landscape has also been dramatically reshaped by the development of extractive industries, notably the Grasberg mine, one of the world's largest gold and copper operations. While these developments have brought economic opportunities, they have also led to environmental degradation and social conflict, with some communities losing access to ancestral lands.
Klaus Thymann, a researcher who has used drones and 3D mapping to document the glaciers, stated that the glaciated area has receded by 95% between the early 2000s and 2025. He highlighted the powerful role glaciers play as indicators of climate change, noting that the term 'eternal' becoming associated with disappearing ice triggers a significant public reaction.
Indigenous communities view the loss of these sacred natural landmarks as a profound disconnection. As Adolfina Kum described it, disturbing sacred mountains or ancestral places is akin to removing the roots of a tree, leaving it without its foundation. The vanishing glaciers of Papua represent not only a scientific loss but also a deep cultural and spiritual wound.