A low earthen bank, roughly semicircular and no more than about 0.8 metres high, curves around the northwestern side, while a field fence completes the flat edge to the southeast. Inside, the ground is gently undulating, rising toward a low knoll along that fence line. Two pine trees stand to the southwest. It is modest, unassuming, and easy to walk past without a second thought, yet it was almost certainly placed here with deliberate care.

The feature is thought to be an element of designed landscape associated with the Mount Rivers estate. In the eighteenth and nineteenth centuries, Irish landed estates frequently shaped their surrounding grounds not just with formal gardens but with subtler interventions, earthworks, plantings, and carefully composed views that linked the house visually to the wider demesne. This enclosure fits that tradition. Its position on the western edge of the property means it falls within the sightline from the house itself, suggesting it was intended to be seen as part of a considered composition rather than left to chance. The two pine trees, species long favoured in estate planting for their year-round form and height, reinforce that reading. Whether the knoll is entirely natural or was shaped to enhance the effect is unclear, but the combination of banked earthwork, rising ground, and deliberate tree placement points to a landscape designed to please the eye from a distance.