This one in Mitchelstowndown West, County Limerick, offers nothing of the sort. The earthwork exists, in any meaningful practical sense, only on a single aerial photograph taken on the 3rd of November 1984, during a survey conducted for a Bórd Gáis Éireann gas pipeline corridor running between Curraleigh West and Limerick. On that image, reference BGE 1/5000 2575, the outline of what may be an enclosure is just visible from the air. On the ground, and on every satellite image captured since, there is nothing to see at all.

The site sits in reclaimed pasture, 110 metres north of the Morningstar River, which forms the boundary between the townlands of Mitchelstowndown West and Glenlary. An enclosure in this context would likely be a roughly circular or oval earthen boundary, the kind used in early medieval Ireland to define a farmstead or a place of some local significance, though no period has been firmly assigned to this one. It does not appear on any Ordnance Survey Ireland historic mapping, meaning it was either already too faint to record by the nineteenth century or was missed entirely. Seventy metres to the west lies a separate feature recorded as a possible ditch-barrow, a burial mound defined by a surrounding ditch rather than an external bank, though that too remains unconfirmed. The earthwork in Mitchelstowndown West was compiled into the archaeological record by Martin Fitzpatrick and uploaded to the Sites and Monuments Record in September 2021, nearly four decades after the photograph that first suggested its existence.

For anyone curious enough to visit the general area, the Morningstar River provides a quiet orientation point along the townland boundary, and the surrounding landscape is ordinary working farmland. There is no marker, no signage, and no visible feature to locate. What makes the spot worth knowing about is precisely that absence: a place that archaeology has registered but the land itself has swallowed, surviving now only as a grey smudge on a forty-year-old pipeline survey photograph.