The structure, measuring approximately 13 metres east to west and 10 metres north to south, features walls around 1.1 metres thick with evidence of a slight base batter on the northern end of the western wall. Originally rectangular in shape, this building stands on a raised mound that sits level with the height of the surrounding bank, likely constructed specifically as a foundation for the stone structure rather than for defensive purposes.

The site has sparked some debate amongst historians and archaeologists regarding its classification. Whilst some have labelled it a motte and bailey, this designation seems questionable given several factors: its upland location, the relatively modest height of the mound, and the apparent lack of strong defensive features typically associated with such fortifications. The ringfort itself, designated OF039-031, appears to have undergone fortification during the medieval period, suggesting a complex history of occupation and modification over time.

The building’s proximity to a tower house to the southeast (designated OF039-047) hints at a broader medieval complex in the area. Rather than serving as a traditional motte and bailey castle, the evidence suggests this was more likely a fortified domestic or administrative building, taking advantage of the existing ringfort’s earthworks whilst adding stone construction typical of the medieval period. The Archaeological Inventory of County Offaly, published in 1997, provides the foundation for understanding this site, though ongoing research continues to refine our knowledge of its true nature and purpose.