The headland measures 55 metres long but averages only 9 metres across, which gives the whole site an almost implausible slenderness. What it lacks in breadth it makes up for in the precision of its defences, compressed into a space where the sea does much of the work and the builders had to make every metre count.

The landward end, the only approach that does not involve the Atlantic, is sealed by a fosse and an inner wall. A fosse is a defensive ditch, here cut to a depth of 2.75 metres and varying between 4 and 8 metres wide at its base. A low causeway, 75 centimetres high and 2 metres wide, crosses it at the centre and leads through a gap in the wall just 1.2 metres across, narrow enough to funnel any visitor into single file. Built into the thickness of the wall on the south-east side of this entrance is what appears to be a guard-chamber, now surviving as a rectangular hollow measuring 2.75 by 1.5 metres and half a metre deep. Two further hut-sites cling to the wall beyond it, their grass-covered outlines still legible. At the centre of the interior, roughly 24 metres in from the defences, lies a souterrain, an underground stone-lined passage of the kind used in early medieval Ireland for storage or refuge. This one is no longer accessible, but two small apertures allow a glimpse of the drystone-walled passage below, infilled to within 40 centimetres or less of its own roof. The site was documented by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, which remains the foundational record for the area.