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| Image Credit : Cotswold Archaeology |
The Discovery
The finds emerged during the first excavation season of the five-year Saving Halberton's Ancient Roman Environment (SHARE) project, led by the University of Exeter and Cotswold Archaeology, with funding provided by the National Lottery Heritage Fund. The villa, dating from approximately the 2nd to the 4th century AD, occupies a commanding position overlooking the surrounding landscape.
Excavations have revealed that the building evolved considerably over the course of its occupation, expanding from a modest rectangular structure into a substantial residence roughly three times its original size. Archaeologists identified evidence for multiple construction phases, including additional northern and southern rooms, a front porch, and possible remains of a timber staircase that may have once led to an upper floor beneath a pitched roof. Wall foundations and a rainwater drainage system were also uncovered at the rear of the building.
What Archaeologists Found
Among the most significant discoveries was an elaborate mosaic floor found within a small room thought to have served as a dining space. Although centuries of ploughing had damaged much of the original pavement, sections remained in situ, while numerous displaced tesserae were recovered from the overlying soil. Constructed from 12-millimetre tesserae in red terracotta, white stone and dark blue stone, the mosaic features a central floral motif formed from eight overlapping teardrop-shaped petals, framed by interlocking squares decorated with guilloché, a distinctive braided pattern commonly associated with high-status Roman flooring.
Conservation specialists from Exeter's Royal Albert Memorial Museum supervised the careful lifting of the mosaic, which will eventually go on display alongside other finds from the excavation at Tiverton Museum of Mid-Devon Life. Bill Horner, Devon County Council's County Archaeologist and Historic Environment Manager, described the mosaic as the most westerly example yet found in a villa in Britain, noting that its presence demonstrates how deeply even this remote corner of Roman Britain had become integrated into the wider Roman Empire.
A second excavation trench revealed an unexpectedly elaborate bathhouse associated with the villa. The complex contained two plunge pools constructed from opus signinum, a waterproof Roman building material made by mixing lime mortar with crushed pottery and tile. Evidence indicates that both pools underwent several phases of alteration during the bathhouse's lifetime: one appears to have been abandoned before being incorporated into an underfloor heating system, suggesting the expansion of a heated room, while the second was remodelled from an original square plan into a larger rectangular layout.
Beyond the residential complex, archaeologists also uncovered a substantial outbuilding that appears to have served an industrial function. Excavations revealed furnaces containing ash, charcoal and hammerscale — the characteristic waste produced during ironworking — indicating metalworking activity on the site. Nearby charcoal deposits, rake-out pits and a stokehole associated with a further furnace suggest a dedicated workshop area, alongside large quantities of animal bone and worked antler.
Historical Background
The site was first identified more than two decades ago by local metal detectorist John Hill, whose discovery of Roman artefacts prompted further investigation through fieldwalking, geophysical survey and trial excavation, ultimately confirming the presence of a villa. The current excavation forms part of a broader effort to understand the process of Romanisation in Devon, an area of Roman Britain that has historically received less archaeological attention than sites further east.
The villa's occupation period, spanning roughly the 2nd to 4th centuries AD, places it firmly within the height of Roman Britain, a time when rural estates such as this one played a central role in the province's agricultural and economic life, while also serving as visible expressions of their owners' wealth and connection to wider Roman cultural norms.
Scientific Analysis
The bathhouse's two plunge pools, and the multiple phases of alteration identified within them, provide valuable insight into the evolution of private bathing facilities at rural Roman estates in south-west Britain, a dimension of provincial domestic architecture that remains relatively understudied. The transformation of one pool into part of an underfloor heating system, and the enlargement of the other from a square to a rectangular plan, together suggest an estate whose owners continued to invest in and remodel their bathing facilities over an extended period.
The presence of furnace remains, hammerscale and associated workshop features points to a dedicated industrial zone supporting the wider villa estate, though the precise purpose of the furnaces themselves has yet to be determined. Further analysis of the recovered animal bone and worked antler is expected to shed additional light on the estate's economic activities and resource use.
Why This Discovery Matters
According to Dr Susan Greaney of the University of Exeter, the excavation has exceeded initial expectations. She noted that while the team anticipated the villa and its surrounding working areas would prove important for understanding the Romanisation of Devon, the site has offered a wealth of interesting and at times surprising finds beyond the striking polychrome mosaic, including a far more elaborate bathhouse than anticipated. Greaney concluded that the villa was undoubtedly home to people of considerable wealth and high standing.
The site's collection of luxury artefacts reinforces this picture of elite occupation. Among the discoveries were a silver-plated Roman spoon, two glass intagli from finger rings — one depicting the goddess Victory — fragments of a large imported amphora, painted wall plaster, a decorated bone pin, fine pottery and an indented drinking beaker. Particularly notable was a fragment of a Samian ware mortarium featuring a lion's head spout, an unusually decorative mixing bowl recovered near the bathhouse, further underscoring the estate's evident affluence.
What's Next?
The excavation also formed a major community archaeology initiative. Over the course of three months, 163 local volunteers contributed more than 3,600 hours to the project, while more than 65 university students received practical training in excavation, survey and archaeological recording — reflecting the SHARE project's broader commitment to public engagement alongside academic research.
Future excavation seasons will focus on expanding investigations of the bathhouse, the industrial complex, and the wider surrounding landscape, with archaeologists hoping to develop a clearer understanding of the estate's economic role and its broader place within Roman Devon.
Conclusion
The discoveries at this Devon villa site offer a remarkable window into elite Roman life at the western edge of Britain, from an elaborately decorated mosaic dining room to a continually remodelled bathhouse and a working industrial complex. As the five-year SHARE project continues, with strong local community involvement at its heart, this Halberton estate looks set to significantly reshape understanding of how thoroughly Roman culture, wealth and architectural sophistication reached even Britain's most remote south-western corners.
Sources : Cotswold Archaeology
FAQ
Q: What has been discovered at the Devon Roman villa site? A: Archaeologists uncovered a high-status Roman villa complete with an elaborate polychrome mosaic, a bathhouse with two plunge pools, and an industrial complex with evidence of ironworking.
Q: Why is the mosaic significant? A: It is recognised as the most westerly polychrome villa mosaic ever found in Britain, demonstrating how deeply Roman culture had reached this remote part of the province.
Q: How old is the villa? A: It dates from approximately the 2nd to the 4th century AD.
Q: Who is leading the excavation? A: The excavation is part of the five-year SHARE project, led by the University of Exeter and Cotswold Archaeology, with funding from the National Lottery Heritage Fund.
Q: How was the site originally discovered? A: It was first identified more than two decades ago by local metal detectorist John Hill, whose finds prompted further fieldwalking, geophysical survey and trial excavation.
