This is a promontory fort, a type of enclosure common along Ireland's Atlantic coastline in which a headland is defended on its most vulnerable, landward side, leaving the sea cliffs to do the work on the other flanks. What makes this particular example quietly curious is its scale and its survival within working agricultural land: the headland is only ten metres wide and twenty-five metres long, a slender platform that even now commands clear views out over the water and can itself be spotted from some distance across the surrounding pasture.

The defences are modest but legible. The earthen bank is round-topped, roughly 3.6 metres wide and standing about 0.8 metres above the level of the interior. The fosse is most distinct on the eastern side, where it measures around 2.2 metres across and a quarter of a metre deep. At the western cliff edge, a cattle gap interrupts the bank, a deliberate break made to allow livestock through, a practical modification that speaks to centuries of continued agricultural use long after any defensive purpose had faded. The interior of the fort is otherwise featureless, but rocks protruding from the headland suggest the usable area was once considerably larger before coastal erosion claimed whatever extended beyond the current cliff edge.

The fort sits within undulating fertile pasture that slopes gradually towards the sea, which goes some way to explaining why the landscape around it has been so continuously farmed. Approaching from the landward side, the bank and fosse are the clearest indicators of what lies ahead; from a distance, the narrow headland itself is the giveaway, a slight projection above the cliff line that looks deliberate rather than accidental, because it is.