It is covered in grass and scrub, and to a casual eye it might read simply as a natural hump in the landscape. It is not. The geometry gives it away: a subcircular form, carefully defined, with a straight western edge aligned precisely along the bluff face and scarps, the steep artificial or semi-artificial slopes that mark its outer edges, dropping between two and two-and-a-half metres on most sides.

The structure is classified as an embanked enclosure, a broad category that covers a variety of earthwork monuments found across Ireland, ranging from prehistoric ceremonial sites to early medieval farmstead boundaries. What makes Bellgrovecross quietly interesting is what is absent as much as what is present. There is no visible fosse, the defensive ditch that typically accompanies an earthen bank, and no identifiable entrance. The earthen bank on the uphill, eastern side is modest, rising only between twenty centimetres and half a metre internally, while the natural and artificial scarps elsewhere do the work of definition. The top of the platform measures roughly twenty-two metres north to south and eighteen metres east to west, expanding to thirty-one by twenty-four metres at the base. That combination of deliberate shaping, a commanding position over water, and the absence of obvious defensive features leaves the enclosure's original purpose genuinely open. It could represent an early settlement, a stock enclosure, or something older and less easily categorised.