Standing on its low rise at the south-eastern corner of Castlereagh townland, where the boundaries of Rathowen East and Townplots West also converge, the site commands clear views in every direction, and from it you can pick out at least three related monuments within 250 metres. Two further raths and a possible enclosure are all visible from this single vantage point, which suggests this was once a genuinely populated landscape rather than an isolated farmstead.

A rath is an earthen ringfort, the most common type of early medieval settlement monument in Ireland, typically enclosing the homestead of a farming family of some local standing. This example measures roughly 28 metres across and retains a layered defensive arrangement that repays close reading. The interior sits within an earthen bank and scarp, themselves enclosed by a fosse, a flat-bottomed defensive ditch roughly 3.8 metres wide, with an outer bank beyond it. At the south-east, where the scarp drops lowest, the original entrance may once have been, though no clearly defined gap survives. Inside, two low parallel banks running on a south-east to north-west axis hint at internal divisions of uncertain date, and the footprint of a possible rectangular structure sits against the southern bank. The bumpy, uneven surface of the interior, scattered with hummocks and hollows, points to more recent disturbance rather than anything earlier. A further possible house site lies immediately to the west of the enclosure, outside the defences entirely. The field bank that now marks the townland boundary cuts across the outer bank at the south, a reminder that later agricultural boundaries have been quietly dismantling these monuments for centuries.