The monument consists of a roughly rectangular enclosure measuring 70 metres north to south and 49 metres east to west, defined by a low, wide earthen bank and an external fosse, or defensive ditch. The bank, which stands about 1.3 metres high on its outer face, is best preserved along the western side, whilst traces of an additional outer bank can still be seen along the northern and western edges. A modern laneway now cuts through the southern half of the site, and whilst some sections have been altered by field drains and levelling, the overall footprint remains clearly visible.

The most intriguing feature lies in the northeast corner of the interior, where a raised area measuring approximately 7.6 by 7 metres may represent the remains of a castle. A gap in the inner bank, about 6 metres wide and positioned 15.5 metres from the northeast corner, likely marks the original entrance to the enclosure. The site sits about 200 metres east of the main road, locally known as the ‘new road’, which runs between Castlecomer and Ballyragget.

Historical records suggest this is the previously unlocated castle and bawn described by historian Carrigan in 1905. According to local tradition, the castle was founded by Mairgréad Ní Gheróid, the famous Countess of Ormond. Carrigan noted that portions of the castle walls remained standing until 1824, with cellars supposedly still preserved beneath the surface. Whilst the visible stonework has long since vanished, the earthworks continue to mark this spot as a place of medieval importance, offering a tangible connection to the Anglo-Norman settlement of this part of Kilkenny.