Archaeologists have uncovered what may be the earliest known example of a planned supply system, after finding stone tools in Kenya that date back between 3 million and 2.6 million years.
The discovery suggests that a Paleolithic community not only crafted tools but also transported raw materials over long distances, redefining when early humans began to organize their environment. The study, published in Science Advances, shifts the timeline for this behavior by roughly 600,000 years.
The excavation took place at Nyayanga, a site on the eastern shore of Lake Victoria. An international team, led by archaeologists Emma Finestone and Rick Potts, recovered 401 Oldowan tools, hammerstones, flakes, and cores, fashioned from types of stone not native to the area.
Geological analysis revealed that many of the rocks originated approximately 13 kilometers (8.07 miles) away, providing strong evidence that these early toolmakers intentionally moved materials across significant distances.
Evidence of early resource planning
This movement of stone suggests a rudimentary form of resource planning. Finestone explained that such behavior had previously been associated with much later periods in human evolution.
She described the findings as unexpected, particularly because the tools come from an early stage of the Oldowan tradition. Until now, the transport of raw materials over long distances was thought to be a more recent development.
These inauspicious stones represent the earliest development of hominid technology.
These are 2.6 million year old tools known as an “Oldowan Tool Kit” they represent scrapers, pounders & axes.
Used to process animal kills.
They were found in Kenya & studies show they were… pic.twitter.com/S49LwA6tsW
— Ancient Hypotheses (@AncientEpoch) August 16, 2025
The tools were discovered alongside butchered remains of hippopotamuses, linking them directly to food processing. This association suggests that early hominins identified food-rich areas and brought materials there specifically to aid in meat preparation.
Potts emphasized that the breakthrough lies not only in tool use, but the act of transporting stone to these areas is a sign of complex planning, much earlier than researchers had believed.
Toolmakers’ identity and mental mapping
The presence of dental remains belonging to Paranthropus near the artifacts has raised new questions. Researchers cannot confirm whether Paranthropus, early Homo, or both were responsible for making the tools.
Finestone noted that without a fossil showing a hominin holding a tool, it’s impossible to assign authorship to a particular species. However, if Paranthropus did transport the stone, it would mean that this advanced behavior was not exclusive to the Homo lineage.
The distances involved in this transport are especially notable. Most of the raw material was collected from areas up to 10 kilometers away.
For comparison, chimpanzees, today’s closest living relatives to humans, rarely carry tools more than two kilometers. Potts explained that the early toolmakers likely had mental maps that extended far beyond their immediate surroundings.
In her written analysis, Finestone pointed out that humans and their ancestors are the only mammals known to travel long distances to collect stone, a material with no culinary value, yet central to acquiring and preparing food. This discovery on the Homa Peninsula not only shifts the origins of long-term planning but also redefines the behavioral complexity of early toolmakers in Kenya.
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