That is what survives at Ballysheeda in County Tipperary, a modest but quietly puzzling earthwork that resists easy explanation precisely because so little of it has been lost. The platform measures roughly 21 metres across, its edge defined by a low scarp dropping about 65 centimetres down to a waterlogged outer fosse, the term for a ditch associated with a defensive or enclosing earthwork. What makes it stranger still is the absence of any visible entrance feature, the usual gap or causeway that would tell you how its inhabitants came and went.

The site sits on a low hillock amid poorly drained, undulating countryside, the kind of terrain that would have been far wetter and more isolating in earlier centuries than it appears today. The elevated, dry platform almost certainly served as a habitation site, a small self-contained island of firm ground in an otherwise marshy landscape. About 150 metres to the south-east lies a second enclosure, D-shaped rather than circular, which suggests this corner of Tipperary was once more densely settled than its present emptiness implies. Circular raised enclosures of this type are broadly associated with early medieval settlement in Ireland, though without excavation it is impossible to assign a precise date to the Ballysheeda example. The waterlogging that makes the site difficult to approach may paradoxically be what has preserved it so well, keeping both the scarp and the fosse in recognisable condition while the platform itself has grown heavily overgrown.