It is the kind of feature that would be easy to dismiss as a natural rise or a field boundary, yet its deliberate, subrectangular shape, measuring roughly fourteen metres on its longer axis, marks it out as something made rather than something merely deposited by geology or chance.

Earthen mounds of this type are scattered across Ireland and can serve several different historical purposes. Some are the remnants of mottes, the raised platforms used by Norman lords from the twelfth century onwards as the foundation for a timber tower and a defended enclosure known as a bawn. Others are earlier in origin, associated with inauguration sites, burial traditions, or territorial markers that predate any written record. At Knockroe, the mound's flat summit and the fact that it sits in low-lying, poorly drained land are details worth noting; such locations were often chosen deliberately in earlier periods, when wetlands carried symbolic and practical significance. The mound is described as being in fair condition, though the northeast and southeast flanks have been worn down over time by livestock grazing, and trees have taken hold across the top and around the sides, giving it a shaggy, overgrown appearance that partially obscures its original form.