Between 11th and 26th July 2017, Archaeological Solutions Ltd (AS) carried out an archaeological excavation at Site 25B, to the southwest of Woodbridge and north of Marthelsham, Suffolk (Figs. 1-2), as part of the East Anglia ONE Offshore Windfarm (Onshore Works), Suffolk. The site was designated Site 25B for the purposes of archaeological recording in advance of cable trenching for the East Anglia One project. The excavation encountered a very small assemblage of residual Early Neolithic struck flint contained in the fills of later features. A small assemblage of Late Bronze Age/Early Iron Age pottery was contained in four dispersed pits. One isolated pit also contained a very small (22g) quantity of cremated human bone, and may represent a LBA/EIA un-urned cremation or token burial. Two loose clusters of medium and large 'burnt pits', total 17, with charcoal-rich basal fills are interpreted as charcoal production pits; in several cases the pits contained top-soil like upper fills representing a back fill deposit following the retrieval of most of the charcoal after firing. One 'burnt pit' contain sherds of LBA/EIA pottery, but this is considered most likely residual. In form and character the burnt pits resemble other charcoal-filled pits on numerous sites in the vicinity of late Saxon to medieval growing (urban) settlements (Ipswich and Norwich), and where radiocarbon dated have consistently returned dates from the mid/late Saxon to early medieval periods. The burnt pits at Site 25B most likely date to the same broad period, and if this is the case represent peripheral activity associated with the dense area of mid/late Anglo-Saxon settlement on adjacent Site 25A located c.50- 100m to the west on the crest of the same hill. The final phase of activity encountered at Site 25B was a series of north-south field boundary and enclosure ditches dating to the post-medieval and modern periods.
Peachey et al. (Tue,) studied this question.