Stone-tipped spears
Stone points from Kathu Pan, South Africa, about 500,000 years old, show wear from being hafted onto spears. Joining parts into one tool is a major step in technology.
The story
Hafting means fixing a stone tool to a handle, so that a sharp stone point becomes the tip of a spear. The oldest strong evidence comes from Kathu Pan 1 in South Africa's Northern Cape, where a team led by Jayne Wilkins studied stone points about 500,000 years old. Under the microscope, many show tiny impact fractures at the tip and wear patterns near the base that match the damage seen in experimental spear points fired at targets and fixed in a wooden shaft. The makers are thought to be Homo heidelbergensis, an ancestor of both Neanderthals and modern humans.
This was a big step beyond the hand axe, which was held in the hand. A spear needs several parts working together: a shaped wooden shaft, a stone point with a base that fits into it, and a binding of sinew, plant fiber or resin. Making a composite tool like this means planning ahead, gathering materials from different places and doing several steps in order. The pay-off is large. A thrusting spear tipped with a sharp point can kill large animals at closer range, and replacing a broken tip is easier than making a whole new tool.
Researchers have noted that the pointed stone flakes from Kathu Pan were made with the prepared-core method, which hints at more advanced thinking by the group. Hafting spread and improved: Neanderthals later made hafted points with adhesive tar made from birch bark, and modern humans made many types of composite tools, including stone-tipped arrows. The Kathu Pan finding is still debated in detail, because it rests on wear analysis, but it is the earliest well-supported case of this technology.
Why it mattered
- First adhesives came from the need to fix points to shafts, with birch tar and plant resins used in later Stone Age sites.
- Hunting became safer and more effective, which gave human groups reliable access to large game.
- Composite tools became the model for later inventions such as bows, axes and knives with handles.
- Planning and multi-step work, which were needed to make hafted tools, helped shape human cognition and culture.
Community notes
Loading notes…