At Shandrum, a ringfort sits on this slight rise, its circular enclosure measuring just over 25 metres across, defined by an earthen bank that still stands to a height of 1.65 metres where it has been left undisturbed. On the north and north-west sides, however, the bank has been levelled to make way for a laneway and farm buildings, a quiet reminder of how agricultural life has continuously reshaped the older landscape around it. The surrounding fosse, the shallow external ditch that reinforced the bank's defensive logic, survives on the ENE to SW arc to a depth of around 0.45 metres.

Ringforts are among the most common archaeological monuments in Ireland, with tens of thousands recorded across the country. They date broadly from the Early Medieval period, roughly the fifth to the twelfth centuries, and served primarily as enclosed farmsteads for individual family groups rather than as military fortifications in the conventional sense. This particular example belongs to the earthen variety known as a rath, as opposed to those built with stone. What makes it worth a closer look is the feature recorded in its southern half: a souterrain. These are underground stone-lined passages or chambers, built beneath or adjacent to a ringfort and used variously for storage, refuge, or both. A shallow semicircular depression inside the bank to the south, measuring five metres long, four metres wide, and 0.4 metres deep, is likely connected to or a surface remnant of that underground structure. The interior of the enclosure is now grazed by livestock, as it has probably been, in one form or another, for centuries.