Nok Terracotta Sculpture

The Nok terracottas are named after a village in southern Kaduna State, in what is now Nigeria, where an example was found in 1928. That find was made by tin miners, and so were most of the others. The miners were working alluvial deposits — river sediment rich in cassiterite, the ore of tin — and they dug through the layers with no reason to care what else was in them. When a terracotta head or fragment came up in the spoil, it was sometimes kept, sometimes photographed, sometimes discarded. What was almost never recorded was where in the ground it had been, what else was near it, or which layer of sediment it came from. The archaeology was destroyed in the act of discovery.

This matters because context is how you date an object and understand what it was for. A head buried alone means one thing; a head buried with grave goods, or with evidence of a fire, or in a layer of midden waste, means another. The sediment itself can be dated, and so can organic material found alongside the terracotta — charcoal, seeds, bone — but only if you know which sediment, and only if you kept the charcoal. The miners kept almost nothing, and wrote down less. By the time archaeologists began systematic excavation in the region, decades later, the richest sites had been worked over and the stratigraphy — the layering of the ground that records sequence and association — was gone.

What survives is a collection of objects with thin provenances. Some have been dated by thermoluminescence, a technique that measures when the clay was last fired, and those dates cluster between 900 BC and 200 BC, with some earlier and some later. The culture itself may have begun around 1500 BC and persisted until the first century AD, but the uncertainty is wide and the evidence is not evenly distributed. Most of what we have are heads, which were either made more often than full figures or survived better. The figures that do exist show people holding bows, sitting in canoes, wearing jewellery, processing plants. One wears what may be a seashell on its head. These are records of activities, but without the context of the burial or the settlement, we do not know whether they are portraits, representations of roles, grave goods for specific people, or objects made for another purpose entirely.

The terracottas were made by coiling clay and then modelling the surface. The firing was done in open pits, not kilns, which means the temperature was lower and less controlled than in a kiln-fired ceramic. The perforations — in the eyes, nostrils, ears, and sometimes the mouth — are structural: they let steam out during firing and prevent the thick clay from cracking. The style is consistent enough across time and space to suggest a shared tradition, but the figures vary in scale, detail and skill. Some are life-sized; others are fragments of larger compositions. The tradition of making them seems to have been sustained over centuries, which implies both continuity of technique and continuity of purpose, whatever that purpose was.

The people who made these figures may have migrated into the region from the Central Sahara, possibly bringing pottery and pearl millet with them, or they may have come from the West African Sahel. The evidence for this is not conclusive. What is clearer is that they worked iron, and that iron-working in the region may have developed independently between 750 BC and 550 BC, though this too is debated. The terracottas themselves are not made of iron, but they were made by people who had access to it, and some of the figures carry tools or weapons that would have been iron in life. The relationship between the terracotta tradition and the development of metallurgy is another thing the missing archaeology might have clarified.