Excavations on the outskirts of Chelmsford focussed on a circular enclosure 60m in diameter seen as a cropmark on aerial photographs. Before excavation it was considered likely to be a henge monument or possibly a Late Bronze Age enclosure like that recently identified at Mucking in south Essex. A Late Bronze Age date was quickly established; the enclosure was fully excavated, and the site has given its name to the English Heritage single monument class description ‘Springfield Type Enclosure’ — a settlement type characteristic, particularly in eastern England, of the Late Bronze Age and earliest Iron Age. Finds included clay moulds for casting Ewart Park type swords.
Nigel Brown , Maria Medlycott, 2013. 'The Neolithic and Bronze Age Enclosures at Springfield Lyons, Essex: Excavations 1981–1991', East Anglian Archaeology 149