This is a rath, the Irish term for a ringfort, a type of enclosed farmstead that was once among the most common settlement forms across early medieval Ireland. Thousands were built between roughly the fifth and twelfth centuries, typically consisting of a raised circular or oval bank, sometimes reinforced with stone or timber, surrounding a domestic space used for housing, livestock, and storage.

The Woodfield example measures approximately 44 metres on its northwest to southeast axis and 33 metres across its northeast to southwest axis, making it a modest but not unusual size for the type. It was defined by a bank and an external fosse, the fosse being the ditch dug to provide material for the bank and to add a further layer of enclosure. Of that fosse, only the northeastern section remains visible. The bank itself has suffered numerous breaches, most of which appear to be modern in origin rather than the gradual erosion of age, suggesting disturbance through agriculture or other land use in the relatively recent past. The site was recorded by Knight around 1975, and the condition noted then reflects what prolonged exposure and changing land use can do to earthworks that were never built to last indefinitely in the first place.