What makes the place quietly remarkable is the layering of time visible in its boundaries: on the southeast and southwest sides, an earth and stone scarp rises to around 1.7 metres, with surviving traces of an external limestone rubble revetment, three to four courses still legible in places. On the northwest side, three limestone slabs, each roughly a metre high and over a metre wide, hint at the same original stonework. The northeast boundary needs no construction at all; a steep natural slope does the work. A late medieval parish church sits near the centre of the interior, itself enclosed within a smaller rectangular enclosure that takes up most of the southern half of the site. The ground inside is undulating, which is typical of long-occupied ecclesiastical sites where centuries of activity leave the earth uneven and unreliable underfoot.

The enclosure belongs to a class of early Irish ecclesiastical sites in which a religious community defined and protected its precinct with substantial earthworks, the boundary serving spiritual as much as practical purposes. Two souterrains, one in the northwest quadrant and one in the northeast, add another layer of complexity. A souterrain is an underground stone-lined passage or chamber, commonly associated with early medieval settlements in Ireland, and thought to have served for storage or refuge. Their presence here alongside the ecclesiastical remains suggests a community that was both devout and pragmatic about its security. The place-name Shancough corresponds to the older Senchua, and according to the ecclesiastical historians Gwynn and Hadcock, writing in 1970, it was here that St. Patrick ordained a man named Ailbe as archpresbyter, a senior clerical rank somewhere between priest and bishop in the early church hierarchy. That single sentence connects this windswept hilltop to the founding narratives of Irish Christianity, though the physical remains themselves speak more of the long medieval centuries that followed.