Where most ringforts close into a full circle, this one stops short, relying on the sheer drop to the river to complete the enclosure on the southern side. That reliance on natural geography rather than human labour is what makes it worth pausing over.

The earthwork is penannular in form, meaning it forms most of a ring but not a complete one. It measures roughly 26 metres east to west, and only 16 metres north to south before the cliff edge takes over. A fosse, the archaeological term for a ditch cut into the ground, runs from the west-south-west to the east-south-east, reaching about 1.1 metres in depth, with an external bank rising to the same height beyond it. A shallower outer fosse, around half a metre deep, adds a second line of definition. The platform enclosed by all of this sits some 1.2 metres above the level of the surrounding ditch, giving whoever occupied it a commanding view over the Blackwater below. A causewayed entrance gap, roughly 4.5 metres wide, opens to the north-north-east. Some disturbance is visible to the west-south-west, and this appears to be the result of past quarrying rather than any deliberate modification to the fort's original design. Today the interior is enclosed by a fence and planted with shrubs, the bank grass-covered and quietly absorbing the landscape of the Templenoe House grounds around it.