The way the site of Ronchères was conceived and laid out is quite remarkable. A deep wide ditch surrounds a residential area of nearly 1 hectare, where woods and fields alternate. There are numerous indications suggesting that the plan and the arrangement of the buildings had been conceived before their construction. The existence of an ironwork unit supplying more than simply local needs implies a major economic role. The excellence of the ceramic ware, amphorae, and a horse’s bit, show that the people living there were unquestionably prosperous. Even if reshaped in the Gallo-Roman period, the site appears to have lost its high status, and to have declined slowly till it disappears during the II nd century A.D.