Understanding ancient societies often involves studying the objects they created, used and sometimes deliberately buried. These artifacts offer clues to their social organization, beliefs and technical mastery. In pre-Roman Europe, deposits of precious objects bear witness to complex practices, mixing art, power and spirituality. This is the case with the treasures of Snettisham, a major Iron Age site in Great Britain, where copper fragments identified as an exceptional helmet illustrate unsuspected know-how.
Snettisham, a site with inestimable heritage
The Snettisham treasures include one of the most important collections of precious metals in prehistoric Europe. In total, fourteen caches were gradually discovered between 1948 and the 1990s on the Ken Hill site in Norfolk. They include torcs in gold, silver and bronze, emblematic objects of Celtic art. With around 400 examples documented, these rings, worn around the neck, arms or wrists, demonstrate advanced craftsmanship and complex cultural practices. Each torque is unique in its shape and dimensions. It served not only as adornment, but also as a marker of social status and personal identity. These deposits, deliberately buried around 150 BC. BC, also reveal a ritual dimension. They suggest practices of collective offerings in sacred places.
© The Trustees of the British Museum
Among these discoveries, the recently identified Iron Age helmet stands out for its extremely rare nature and its refinement. According to Dr Julia Farley, curator at the British Museum, only ten similar helmets are known to date in Britain. This model remains special, made from thin sheets of bronze. It is distinguished by an elaborate nose bridge and eyebrow-forming pieces, illustrating exceptional metallurgical know-how. This helmet, incomplete and fragile, could have served as a prestigious object or even as a container for other artifacts. Archaeologists therefore believe that it had as much symbolic as functional value.
Meticulous helmet reconstruction and technological revelations
Certainly initially, the team interpreted the fragments of the helmet as elements of a container. But Fleur Shearman, curator of metals, patiently put these pieces together, like the elements of a complex puzzle. She then revealed characteristics that left no doubt about their true nature. Namely the nasal bridge and eyebrows. This process also brought to light an advanced technique of mercury gilding, a particularly sophisticated and toxic method.
By fusing gold and mercury to create an amalgam, the artisans of the time were able to deposit a uniform golden layer on bronze objects. They thus gave them a precious shine and great durability. “ We didn't know they could do it in Britain 2,000 years ago “, explains Julia Farley. She adds: “ There's a reason why everyone was so surprised…Pre-Roman Iron Age helmets in Britain are simply extremely rare”.
Dr Jody Joy, former Iron Age curator at the British Museum, described the reconstruction work as one of the highlights of his career. This reconstruction is not limited to the object itself, but opens a window on the technical skills, creativity and cultural practices of pre-Roman societies.
Experts say the helmet was probably not complete when it was buried because many things were missing. Maybe it was an inheritance, or something that can't be fixed. Or that it was simply intended as a container for other materials when it was buried.
The cultural and symbolic importance of the deposits, between helmet and torques
Iron Age torcs and helmets transcend their simple aesthetic value, offering insight into their daily use and role in the societies of the time. Analyzes carried out with electron microscopes revealed significant wear marks on these objects. Particularly on surfaces in contact with skin or clothing. These clues confirm that they were not just status symbols, but personal possessions worn regularly, sometimes for long periods of time. Contrary to stereotypes that associate these ornaments with a male elite, their diversity of sizes suggests that they were used by men, women and even children.
© The Trustees of the British Museum
However, the mystery remains. Why were there so many objects buried in the Snettisham caches? For Dr Julia Farley, curator at the British Museum, their burial could be linked to ritual ceremonies. She puts forward the idea that these objects were too precious to be melted down into coins. They were intentionally placed in the ground during community gatherings, potentially marking sacred sites. This hypothesis is reinforced by the later presence of Roman structures, such as temples, nearby.
More than 80% of the Iron Age (800 BC to AD 43) torcs and bracelets known in Britain come from a field and forest in Ken Hill, near Snettisham, recalls the BBC. This includes the Great Torque of Snettisham, one of the most elaborate gold objects of the ancient world.
An organized and structured company
“ People often tend to think that a complex society requires pyramids, temples or a crowned king », observes Dr Jody Joy, returning to the conclusions drawn from a 15-year analysis. Conversely, Snettisham's findings reveal that a dynamic and inventive Iron Age society could achieve great sophistication without these traditional symbols of power.
The scientists collaborated with a metallurgist who demonstrated the complexity and intensity of the process required. He explained the considerable time it would have taken to even out the circumference of the wires and twist them precisely.
© The Trustees of the British Museum
“ They had the means to extract gold, create these extraordinary objects, use them in social contexts that we do not yet fully understand. And finally, bury them in the ground according to complex rituals “, he explains. Dr Julia Farley concludes: “ These individuals were as sophisticated and resourceful as we are. They led rich and meaningful lives. I hope that the treasures of Snettisham will inspire both recognition and wonder for a world so different from ours “.
Source: BBC
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