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 A HISTORY OF DERBYSHIRE SCALE OF rtCT o too zoo 300 cv Field DUFFIELD CASTLB. The numerous traces of the holding of this site by the Romans have been dealt with in the article on Roman Remains. Trenches that were cut at D, E, and F, as marked on the plan, exposed, in each instance, some two feet below the surface, charred wood and black ash, pointing to the burning of a stockade on this line, possibly when the Danes attacked the site in the tenth century. A large variety of Anglo-Saxon finds came to light on the top of the mound at some little depth, particularly in the deep trench marked A, B, C ; they 382