English (International) 
Korean (South Korea)
Eternal Snow in Papua is a rare natural phenomenon in the Cartenz Mountains, the only snow-covered region in Indonesia and at the equator. Learn about its history, culture, and environmental challenges.
A Rare Natural Wonder in Indonesia
Papua, Indonesia’s easternmost region, is known as one of the areas with the richest natural and cultural diversity in the world. From pristine tropical rainforests to towering mountains, Papua holds many surprises that are often not widely known to international tourists.
One of Papua’s most remarkable natural wonders is the presence of eternal snow in the Cartenz Mountains, internationally known as Carstensz Pyramid, home to Indonesia’s only eternal snow. How is it possible for snow to exist in an equatorial region, an area synonymous with tropical climate and warm temperatures year-round?
Getting to Know the Cartenz Mountains (Carstensz Pyramid)
The Cartenz Mountains are located in Central Papua Province, Indonesia, and are part of the Jayawijaya Mountain range, Indonesia’s only high mountain range reaching elevations above 4,000 meters above sea level.
Its highest peak, Puncak Jaya (4,884 meters above sea level), is:
- The highest point in Indonesia
- The highest mountain in Oceania
- One of the Seven Summits, the seven highest peaks on each continent
Internationally, Puncak Jaya is better known as Carstensz Pyramid. Local Papuan communities have their own name for these mountains: Nemangkawi Ninggok or Puncak Jaya, reflecting cultural reverence for the sacred nature.
What makes Cartenz unique is its location—these mountains are situated only about 4 degrees latitude south of the equator. This makes it one of the few places in the world with eternal snow in the tropical zone.
The Phenomenon of Eternal Snow at the Equator
What Is Eternal Snow?
Eternal snow (permanent snow or glacier) is snow that doesn’t melt throughout the year and persists for decades to thousands of years. This phenomenon occurs due to extreme temperatures at elevations above 4,500 meters above sea level, where temperatures can drop below 0°C even during the day. Typically, this phenomenon is only found in polar regions or high mountains at middle and cold latitudes.
Why Can Snow Exist in Tropical Areas?
Although Papua is located in the equatorial region with a tropical climate, the extreme elevation of the Cartenz Mountains creates very different alpine climate conditions. For every 100 meters of elevation gain, the average air temperature drops by about 0.6°C. At an elevation of nearly 5,000 meters, temperatures are cold enough to maintain snow and glaciers year-round.
The combination of these factors creates microclimate conditions that allow glacier formation, despite being located right at the equator.
Cartenz's Global Uniqueness
The Cartenz Mountains are one of only three locations in the world with tropical glaciers, along with Mount Kilimanjaro in Tanzania and the Andes Mountains in South America. However, Cartenz is the closest to the equator, making it the rarest phenomenon geographically.
This phenomenon makes Papua’s Eternal Snow one of the rarest natural wonders in the world.
History of Snow Discovery in Papua
In 1623, Dutch sailor and explorer Jan Carstenszoon reported to Europe that he saw a snow-capped mountain peak in a region near the equator. At the time, this claim was considered absurd and even doubted by many scientists.
It wasn’t until the 20th century, through expeditions and modern scientific research, that the report was proven true. Since then, the Cartenz Mountains have become a focus of international geography, climatology, and geology studies.
Current Condition of Eternal Snow
Unfortunately, Papua’s Eternal Snow is now in a concerning condition.
Glacier Shrinkage
Research shows that the Cartenz glacier has experienced drastic shrinkage in recent decades. Studies indicate that the Cartenz glacier has shrunk by more than 80% since the 1850s. In 1909, there were five main glacier fields, but now only a few small fragments remain. Some ice layers are even predicted to disappear completely in the near future.
Impact of Global Climate Change
Rising global temperatures are the main factor in the melting of eternal snow. This phenomenon has not only local impacts but also serves as a tangible symbol of climate change occurring worldwide.
Future Predictions
Scientists predict that without serious mitigation efforts, Papua’s Eternal Snow could vanish within the coming decades—representing a major loss for Indonesia and the world.
Conservation Efforts and Environmental Challenges
The preservation of Papua’s Eternal Snow faces various challenges, including the importance of conservation:
- Protection of mountain habitat and ecosystems
- Ongoing scientific research to monitor glacier changes
- Environmental education for local communities and tourists
- Access restrictions to reduce human footprint
- International partnerships in conservation efforts
Role of Government and Global Community
The Indonesian government has designated several areas in Papua as conservation zones, including Lorentz National Park, which encompasses part of the Jayawijaya Mountains. This national park has even been recognized by UNESCO as a World Heritage Site since 1999, acknowledging its extraordinary ecological and cultural value.
However, conservation efforts require long-term commitment and collaboration among government, local communities, international organizations, and the global community to address the challenges of climate change and sustainable development.
Cartenz as an Extreme and Iconic Destination
Seven Summits Climbing
Puncak Jaya is included in the “Seven Summits” list—the seven highest peaks on each continent that represent the ultimate challenge for professional mountain climbers worldwide. Some versions include Puncak Jaya as Oceania’s highest peak, replacing Mount Kosciuszko in Australia, which is technically easier to climb.
Difficulty Level and Terrain
The Cartenz climb is considered one of the most challenging of the Seven Summits, not because of its height, but due to its extreme technical terrain. Climbers must traverse:
- Dense and muddy tropical rainforest
- Vertical cliffs requiring rock climbing techniques
- Unpredictable weather with thick fog and rain
- Difficult access due to the remote location in Papua
This climb requires high technical skills, including the ability to climb cliffs (technical rock climbing) at extreme altitudes. The climbing route typically takes 4-7 days, depending on weather conditions and the chosen route.
International Status
In the international mountaineering world, Cartenz has a reputation as one of the most prestigious and challenging climbs. Reaching its summit is a globally recognized achievement, and only thousands of select climbers have successfully conquered it since the first ascent.
Access and Climbing Permits
To reach the Cartenz Mountains, climbers must obtain special permission from the Indonesian government because this location is in an area requiring security and conservation regulations. There are two main routes:
- Route from Timika – through PT Freeport (mining company) by helicopter
- Traditional trekking route – through local villages with a longer but more authentic approach
Climbing costs are quite high due to complex logistics, ranging from $5,000 – $15,000 USD per person, depending on the route and operator.
Papua's Unique Flora and Fauna
Mountain Biodiversity
The Cartenz Mountains are part of one of the ecosystems with the highest biodiversity in the world. At various elevation zones, we can find:
- Tropical rainforest zone (0-1,000 meters above sea level): Home to thousands of plant species, birds of paradise, cassowaries, and mammals such as cuscus
- Mountain forest zone (1,000-3,000 meters above sea level): Dominated by podocarpus trees, eucalyptus trees, and various types of endemic orchids
- Alpine zone (3,000-4,000 meters above sea level): Alpine grasslands with characteristic plants such as Papuan edelweiss
- Ice and snow zone (above 4,500 meters above sea level): Almost no life, except for some types of moss and lichen
Papua's Endemic Species
Papua is home to more than 20,000 plant species, 600 bird species (including 52 species of birds of paradise), and hundreds of unique mammal species. Many of these are endemic, meaning they are only found in Papua and nowhere else in the world.
Cultural Value and Meaning for Papuan People
Spiritual Connection with the Mountains
For Papua’s indigenous people, especially the Amungme and Dani tribes, the Cartenz Mountains are not merely a geographic object. They consider these mountains sacred and an integral part of their cultural identity. In local cosmology, the mountains are believed to be the dwelling place of ancestral spirits and possess great spiritual power.
A Natural Heritage That Needs Protecting
Eternal Snow in Papua is not just a geographic phenomenon, but also a symbol of Indonesia’s natural wonders. Its existence reminds us that Indonesia has extraordinary natural wealth that is also fragile.
Through understanding, education, and respect for nature and local culture, we can play a role in preserving this heritage. Getting to know Papua more deeply means appreciating Indonesia’s diversity as a whole.
