When archaeologists surveyed the site in 1986, they found no obvious traces of the castle structure itself on the surface. What they did discover, however, were two subtle earthworks; low, broad banks measuring roughly 20 centimetres high and 2 metres wide that traced out two sides of what appeared to be a rectangular enclosure. These faint impressions in the landscape suggest the possible remains of a bawn, the defensive courtyard that would have once surrounded the castle.

The dimensions of this ghostly footprint are substantial, with the enclosure estimated to measure approximately 80 metres from east to west and 50 metres in width. Bawns were a common feature of Irish castles and fortified houses, particularly during the plantation period, serving as walled courtyards where livestock could be protected and defenders could make their stand during raids. The broad, low profile of these banks suggests centuries of erosion and agricultural activity have worn down what were once likely more substantial defensive walls.

While the castle itself has vanished from view, leaving only these subtle earthen traces, the site remains an intriguing piece of Kildare’s medieval landscape. The Sarsfield name connects the location to one of Ireland’s notable families, though the exact history of this particular castle remains elusive. Like many such sites across Ireland, what was once a symbol of power and protection has been reclaimed by the land, leaving only the faintest whispers of its former presence for those who know where to look.