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New archaeological discovery shows ancient seafarers reached West Papua 55,000 years ago

New archaeological evidence has unveiled a crucial chapter in human history, shedding light on how and when the first humans ventured into the Pacific. Over 55,000 years ago, skilled seafarers made daring voyages from Asia to the Pacific Islands, marking a significant migration that shaped the spread of Homo sapiens across the globe. These early mariners laid the foundation for the diverse cultures that inhabit the region today, from West Papua to New Zealand. While the exact timing and routes of these ancient journeys have long been debated, recent research offers compelling new insights.

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Digging into the Past: Archaeological Fieldwork in West Papua

A groundbreaking international collaboration has recently focused on Waigeo Island in the Raja Ampat archipelago of West Papua. This major archaeological project brought together experts from New Zealand, West Papua, Indonesia, and beyond. The team’s efforts centered around Mololo Cave, a vast limestone chamber nestled within dense tropical rainforest. This site, aptly named in the local Ambel language as “the place where the currents come together,” proved to be a treasure trove of ancient human activity.

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Excavations at Mololo Cave revealed several layers of human occupation, including stone tools, animal bones, shells, and charcoal — all remnants left by the cave’s ancient inhabitants. Although the deepest layers yielded fewer artifacts, radiocarbon dating conducted at the University of Oxford and the University of Waikato confirmed that humans had settled in Mololo as far back as 55,000 years ago.

Living in the Rainforest: Early Human Adaptation

One of the most remarkable discoveries from Mololo Cave was an ancient tree resin artifact, the oldest of its kind found outside Africa. This artifact underscores the sophisticated skills early humans developed to survive in challenging rainforest environments. Detailed analysis using a scanning electron microscope revealed that the artifact was created in multiple stages: first, the bark of a resin-producing tree was cut to allow the resin to drip and harden, then the solidified resin was shaped for use.

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While the exact function of this artifact remains unknown, it may have been used as fuel for fires within the cave, a practice documented in West Papua until the 20th century. The analysis of animal bones found at the site suggests that these early humans hunted a variety of ground-dwelling birds, marsupials, and possibly large bats. This evidence points to a remarkable adaptability, as the inhabitants of Waigeo Island skillfully utilized both the rainforest and coastal resources for survival.

Tracing the Seafaring Routes to the Pacific

The findings from Mololo Cave offer valuable clues about the timeline of human migration into the Pacific. This period is of great interest to archaeologists, as it holds significant implications for understanding the speed and nature of human dispersal from Africa into Asia and Oceania. It also raises important questions about the interactions between early humans and other hominin species, such as the “hobbit” (Homo floresiensis) on nearby Indonesian islands.

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Two main theories have been proposed regarding the seafaring routes taken by these early explorers: a southern route into Australia and a northern route into West Papua. Evidence from northern Australia suggests that humans may have settled the ancient supercontinent of Sahul, which connected West Papua to Australia, by around 65,000 years ago. However, findings from Timor indicate that the southern route may have been used as recently as 44,000 years ago. The latest research supports the idea that the earliest seafarers reached West Papua via the northern route, eventually spreading southward into Australia.

The Enigma of West Papua’s Archaeological Record

Despite these significant discoveries, much about West Papua’s deep human history remains unknown, largely due to the region’s political and social challenges. Nevertheless, the research conducted at Mololo Cave reveals that early West Papuans were not only highly mobile but also innovative in overcoming the challenges of life on small tropical islands. Continued excavations aim to further uncover how these ancient populations adapted to the changing climate and environment of the region.

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The broader archaeological record from nearby Papua New Guinea shows that once humans arrived in the Pacific, they continued to explore, eventually reaching the New Guinea Highlands, the Bismarck Archipelago, and the Solomon Islands by 30,000 years ago. It was not until around 3,000 years ago that these seafaring traditions expanded further, leading to the settlement of distant islands such as Vanuatu, Fiji, Samoa, and Tonga. Their descendants later ventured even farther, reaching as far as Hawaii, Rapa Nui, and Aotearoa.

Conclusion: Charting West Papua’s Ancient History

Understanding West Papua’s archaeological record is crucial for tracing the origins of the wider Pacific’s inhabitants and their adaptations to life in this vast and varied landscape. Ongoing research promises to fill in the gaps of this ancient story, offering insights into the resilience and ingenuity of early humans who once called these islands home.

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