The enclosure measures roughly 30 metres along its longer axis and sits on a gentle rise above the south-western shore of Killala Bay, with the ground falling away to the shoreline about 50 metres to the south-east. What survives is a rath, the Irish term for a roughly circular or oval earthen ringfort, a type of enclosed farmstead built in their thousands across Ireland during the early medieval period, typically between the fifth and twelfth centuries. Here, the enclosing bank has been worn down considerably over the centuries, surviving in places only as a low scarp rather than anything resembling its original height, though on the south-western arc it still presents as a broad earthen rise with stones protruding from the top and outer slope.

The interior tells a layered story of reuse and alteration. The ground level in the north-western quadrant sits noticeably higher than the rest, which may reflect the accumulated remains of structures or deposits from the fort's period of use. A field boundary that once bisected the interior on a north-east to south-west axis, clearly visible on the 1922 Ordnance Survey six-inch map, has since been removed, though remnants of another boundary survive along the western edge. A low stony rise, sod-covered and running roughly north-west to south-east through the centre of the interior, adds further complexity. Whether this represents the trace of a structure, a later division, or something else is not immediately clear from the surface alone. There is also a 4-metre gap in the bank on the western side, from which a shallow depression runs eastward into the interior for about 6 metres, possibly the ghost of an original entrance passage.