Plan of medieval city revealed

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Published: Wednesday 3rd December 2014 by The News Editor

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A detailed plan of an 11th century medieval city has been revealed for the first time by archaeologists using 21st century technology.

A team of academics from the University of Southampton used a range of state-of-the-art scanning techniques to uncover without digging a plan of the network of buildings at Old Sarum, near Salisbury, Wiltshire.

They concentrated their survey around the inner and outer baileys of what was once a fortification, with its origins in the Iron Age and the Roman conquest.

Their investigations revealed the layout of a settlement including structures from the late 11th century, contemporary with the construction of a cathedral and castle. The city was inhabited for more than 300 years, but declined in the 13th century with the rise of New Sarum (Salisbury).

The findings, which concentrated on the medieval period, have shown a series of massive structures along the southern edge of the outer bailey defensive wall, perhaps suggesting large buildings of a defensive nature.

They have also revealed an open area of ground behind these large structures, perhaps for mustering resources or people, or as part of a circular route through the city, residential areas in the south east and south west quadrants of the outer bailey alongside the inner bailey ditch and evidence of deposits indicating industrial features, such as kilns or furnaces as well as signs of quarrying after the 1300s.

Kristian Strutt, director of archaeological prospection services at the University of Southampton, said: “Archaeologists and historians have known for centuries that there was a medieval city at Old Sarum, but until now there has been no proper plan of the site.

“Our survey shows where individual buildings are located and from this we can piece together a detailed picture of the urban plan within the city walls.”

The research was conducted as part of the Old Sarum and Stratford-Sub-Castle Archaeological Survey Project, directed by Kristian Strutt and fellow Southampton archaeologists Timothy Sly and Dominic Barker. Old Sarum is under the custodianship of English Heritage which granted permission for the investigation to take place.

Heather Sebire, property curator at English Heritage, said: “Having the team of archaeologists on site over the summer gave our visitors a chance to find out more about how important historic landscapes are surveyed. The use of modern, non-invasive surveying is a great start to further research at Old Sarum.

“From this work we can surmise much about the site’s past and, whilst we can’t conclusively date the findings, it adds a new layer to Old Sarum’s story. We welcome the chance to find out more about our sites, and look forward to exploring ideas for further research in the future.”

The team used a variety of techniques to examine the outer and inner bailey of the site. These included the use of topographic survey methods and geophysical survey techniques – comprising of magnetometry, earth resistance, ground penetrating radar (GPR) and electric resistivity tomography (ERT) survey.

Mr Strutt said: “Our research so far has shown how the entire outer bailey of the monument was heavily built up in the Middle Ages, representing a substantial urban centre. Results have given us compelling evidence as to the nature of some of the structures. It is clear, however, that there is more non-intrusive work that could be carried out to further expand our understanding of the site.”

The team hopes to return to complete the survey of the inner and outer baileys and survey the Romano-British settlement to the south of Old Sarum in Easter 2015.

Old Sarum was originally an Iron Age fort established around 400 BC and occupied by the Romans after the conquest of Britain in AD 43.

A castle, originally built of timber and later stone, was built after the Norman Conquest.

By 1092 a cathedral had been constructed – with an extension added in 1130. Eventually, a new cathedral was established during the 1220s in what is now modern-day Salisbury – marking the start of a gradual decline of Old Sarum. However, the royal castle remained an administrative centre into the 14th century.

Published: Wednesday 3rd December 2014 by The News Editor

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