Conservation work has started on two ancient sites in Thetford.
English Heritage is carrying out the works at Thetford Priory and the Church of the Holy Sepulchre.
The project, which is expected to take between 10 and 12 weeks, is designed to preserve both sites by halting erosion and reinstating masonry which has been lost or detached from the ruins.
All works will be carried out using traditional lime based mortars.
At Thetford Priory - which was founded in the early 12th century and was one of the largest and most important monasteries in medieval East Anglia -preservation work is also taking place to some medieval floor tiles after their condition started to deteriorate due to weather exposure.
Advice was sought from Historic England and architects Acanthus Clews, and they will be reburied under a protective layer of soil to preserve them for future generations.
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