The tunnel in question would be a souterrain, a type of stone-lined or rock-cut passage built beneath Early Medieval farmsteads, typically for storage or refuge. Whether this particular one exists has never been confirmed, but the story itself points to something worth noting: ringforts of this kind were rarely seen as simply old or neutral ground. The perceived link between this rath and a site associated with unbaptised children buried outside consecrated ground suggests a landscape charged, at least in local memory, with a kind of underground intimacy between the ancient and the sorrowful.

The site itself is a univallate rath, meaning it is enclosed by a single earthen bank rather than the multiple concentric rings found at higher-status sites. Its plan is sub-circular, measuring roughly 27 metres north to south and 31 metres east to west. The enclosing bank is still reasonably well defined, rising to about 1.7 metres on the outer face and 1.2 metres above the interior, though cattle have broken through it in several places over the years. The interior sits at a slightly elevated level relative to the surrounding land, a common feature of raths, and has become somewhat overgrown. Thousands of such enclosures survive across Ireland, the remains of Early Medieval farmsteads dating broadly from the fifth to the twelfth centuries, built to protect livestock and household from everyday hazards rather than from any serious military threat. This one in north Kerry is unassuming by any structural measure, but its position to the east of a related monument and its folkloric connection to the nearby burial ground give it a quiet weight that earthwork dimensions alone cannot convey.