The grassy enclosure measures approximately 34.6 metres from east to west and 30.8 metres from north to south, creating a substantial fortified space that would have served as both a defensive position and a status symbol for its inhabitants.

The site’s defining features are its carefully constructed boundaries, which combine different defensive elements typical of medieval moated sites. Along the northern edge, a slight earthen bank rises about 4.7 metres wide, standing 0.3 metres high on the inside and 1.6 metres on the outside. The southern, western and northern sides are protected by fosses or moats, measuring between 4.4 and 5.4 metres across at the top and narrowing to 2 to 3.3 metres at the base. These defensive ditches reach depths of 1.3 to 1.5 metres externally and about 1.5 metres internally, creating formidable barriers that would have been even more impressive when filled with water.

The eastern fosse tells a different story; now only 5 metres wide and a mere 0.2 metres deep, it has been backfilled where it meets the adjacent moated site, suggesting modifications over time as the landscape evolved. Overgrown field banks along the outer edges of the southern, western and northern moats hint at later agricultural use, showing how this once-formidable defensive structure was gradually absorbed into the farming landscape of rural Roscommon.