Oldest Evidence of Early Humans Discovered on Indonesian Island of Sulawesi: 1.48 Million-Year-Old Stone Tools Suggest Possible Link to Hobbits and Homo erectus

In a groundbreaking discovery, archaeologists have unearthed primitive stone tools dating back between 1.04 million and 1.48 million years ago on the Indonesian island of Sulawesi, providing compelling evidence of early human presence in the region. The findings, published in Nature, suggest that Sulawesi may have been inhabited by early hominins at the same time, or possibly earlier, than neighboring Flores, where the enigmatic Homo floresiensis, or “hobbits,” were previously known to reside.

Situated beyond mainland Southeast Asia, the region known as Wallacea comprises a group of islands between Asia and Australia, with Sulawesi being the largest. The newly discovered stone tools represent the oldest evidence of human habitation on Sulawesi, hinting at the island’s potential role as a stepping stone for early hominins.

The flaked stone tools were found in an area known as the Calio site, near a river channel in a modern cornfield. The archaeologists also discovered animal fossils in the vicinity, including a jawbone of the now-extinct Celebochoerus, a type of pig with unusually large upper tusks.

The excavations, led by co-lead study author Budianto Hakim, senior archaeologist at the National Research and Innovation Agency of Indonesia, commenced on Sulawesi in 2019 following the discovery of a stone artifact protruding from a sandstone outcrop. Seven stone tools were uncovered during the excavations, with dating of the sandstone and fossils indicating an age estimate for the tools of at least 1.04 million years old to potentially 1.48 million years old.

The small, sharp stone fragments used as tools were likely fashioned from larger pebbles in nearby riverbeds and were probably employed for cutting or scraping. The tools are reminiscent of early human stone technology discoveries made on Sulawesi and other Indonesian islands, as well as early hominin sites in Africa.

However, the identity of the toolmakers remains a mystery, as no hominin fossils have yet been found at the Calio site. The researchers posit that these tools could have been crafted by Homo erectus or an isolated group of this early Asian hominin, similar to Homo floresiensis on Flores.

The discovery adds weight to the hypothesis that Homo floresiensis originated from Sulawesi and underscores the need for further investigation into the region’s fossil record. The researchers continue their investigative work at Calio and other sites across Sulawesi in search of hominin fossils, hoping to uncover the captivating story that lies within this unique island.