Embanked enclosure, Tinnascart, Co. Waterford

On a hilltop in Tinnascart, County Waterford, there is an oval patch of grass ringed by an earthen bank and shaded by deciduous trees, and it is the kind of thing you could walk past without quite registering what you were seeing. But the bank, quietly substantial at between three and five metres wide and rising up to about 1.6 metres on its outer face, encloses a space that was deliberately shaped and carefully built, probably a very long time ago.

An embanked enclosure is exactly what it sounds like: a defined area, often roughly circular or oval, bounded by a raised earthen bank rather than a ditch or wall. Such enclosures appear across Ireland in various forms and periods, and their original purposes are not always easy to establish. This one measures roughly 34 metres east to west and just under 27 metres north to south, dimensions that were already being mapped when the Ordnance Survey produced its six-inch sheets in 1840, at which point it was recorded as approximately circular and about 30 metres in external diameter. Traces of stone-facing survive on both the inner and outer sides of the bank, suggesting the original construction was more substantial than what remains today. There is no visible fosse (a surrounding ditch, commonly found at enclosures of this kind) and no clearly identifiable entrance gap. Spoil material has been added to the perimeter at some point, which complicates any reading of the bank's original profile. A second enclosure sits roughly 110 metres to the south-east, which hints that this part of Tinnascart was a place of some significance in the landscape.

The hilltop position is worth dwelling on. Siting an enclosure on elevated ground is a recurring choice in Irish prehistory and early history, sometimes for reasons of visibility, sometimes for drainage, sometimes for reasons we cannot now recover. Without excavation, the date and function of the Tinnascart enclosure remain open questions, but the stone-facing and the careful banking suggest an investment of effort that was not incidental.