A shallow, roughly circular depression in the pasture at the ridge's southern end is all that survives of what was once a subcircular enclosure some 35 to 40 metres in diameter. Raths, the earthen ringforts that once served as enclosed farmsteads for early medieval Irish families, are among the most common archaeological monument types in Ireland, but this one has been comprehensively erased.

The enclosure was recorded on Ordnance Survey six-inch maps in both 1837 and 1930, which means it was still legible, at least cartographically, well into the twentieth century. By the time of the 1930 survey, however, the map already shows a roughly circular hollow in the eastern half of the interior, consistent with local accounts that the centre of the enclosure was deeply quarried out. Quarrying of this kind was not unusual; the earthen banks and ditches of a rath could offer useful material, and the land they occupied was often considered more valuable cleared than preserved. A second rath survives roughly 250 metres to the east-south-east, offering a sense of what the Raish site might once have looked like. The ridge location, with its commanding views in all directions, would have made both enclosures well-chosen positions for their original occupants.