Revealing the mystery of the 'hobbit': 1 million-year-old stone tool in Indonesia challenges all hypotheses

DNVN - A series of stone tools unearthed on the island of Sulawesi, Indonesia, has sparked new debate about human migration and evolution. The discovery suggests that early humans were capable of crossing the sea more than a million years ago, leaving many unanswered questions about their identity and development.

Researchers from Griffith University in Australia say the new evidence comes from the early Pleistocene, or Ice Age, site of Calio, which dates back at least 1.04 million years. The study, published in the journal Nature, was led by Budianto Hakim of the Indonesian National Research and Innovation Agency (BRIN) and Professor Adam Brumm of the Australian Research Centre for Human Evolution (Griffith University).

Stone artifacts and fossils excavated from ancient sandstone layers at Calio.

During the excavation, Hakim’s team found seven stone artifacts embedded in sandstone layers in a cornfield in South Sulawesi. The tools are considered direct evidence of early human activity in the area. The artifacts include small, sharp stone flakes—the result of ancient people breaking larger pebbles, most likely from a nearby riverbed.

According to analysis, during the early Pleistocene period, the Calio site may have been a place for tool production and activities such as hunting, with its location near the riverbed providing both raw materials and resources.

To determine the age, the team used paleomagnetic dating of the sandstone itself, combined with analysis of pig fossils found at the same site. The results showed that the artifacts were at least 1.04 million years old.

Previously, Professor Brumm's team discovered traces of Hominin habitation in the Wallacea region from 1.02 million years ago at the Wolo Sege site on Flores Island, and about 194,000 years ago at Talepu, Sulawesi Island. In addition, Luzon Island in the Philippines also recorded evidence of Hominin from about 700,000 years ago.

“This discovery helps us better understand the movement of extinct human species across the Wallace Line – a transition zone where endemic species evolved in isolation,” Professor Brumm stressed. “However, the Calio site has not yet yielded hominin fossils. We know that there were tool makers on Sulawesi a million years ago, but their identity remains a mystery.”

The question is: Who were the first inhabitants of Sulawesi? Previously, the discovery of Homo floresiensis (the Hobbit) and the 700,000-year-old fossil of a similar small human on the island of Flores suggested that Homo erectus may have been the species that crossed the Southeast Asian sea barrier to inhabit the islands of Wallacea. On Flores, they underwent a unique evolutionary process that resulted in “dwarfing” over hundreds of thousands of years.

The new discovery in Sulawesi prompted Professor Brumm to ask: “If Homo erectus had settled on an island 12 times larger than Flores like Sulawesi, what would have happened to them? Would they have undergone the same evolutionary change as the Flores hobbits, or would it have been a completely different scenario?”

“Sulawesi is an enigma. It’s like a continent in miniature. If hominins were isolated there for a million years, they could have undergone changes beyond our expectations,” Brumm said.

La Khe (According to SciTechDaily)

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