Somewhere in a field of reclaimed pasture in Mitchelstowndown West, County Limerick, a prehistoric burial mound lies entirely invisible, betrayed only by a ghostly mark captured on an aerial photograph taken on a November day in 1984. No earthwork, no stones, no hollow in the turf; the landscape offers nothing to the eye at ground level.

The site is one of as many as 36 possible barrows, which are prehistoric burial mounds typically constructed of heaped earth or stone over one or more interments, clustered within a compact area of roughly 250 metres north to south and 450 metres east to west. This density suggests a funerary landscape of some significance, though none of these features appear on Ordnance Survey Ireland historic maps, meaning they escaped the notice of nineteenth-century surveyors entirely. The particular barrow in question sits approximately 140 metres south of a watercourse that forms the townland boundary with Mitchelstowndown North. Its existence was recognised only when researcher Martin Fitzpatrick examined a Bord Gáis Éireann aerial photograph, reference BGE 2575, Site No. 268, taken during pipeline survey work in November 1984. That photograph, shot from altitude for an entirely practical commercial purpose, inadvertently preserved a record of a monument that the ground itself no longer discloses.

For anyone attempting to locate the site, subsequent Google Earth orthoimages show no surface remains whatsoever, and there is no physical feature to orient a visit. The value here is more archival than experiential; the aerial photograph held in the Bord Gáis Éireann survey records remains the primary evidence. The wider cluster of potential barrows in the area may reward those with access to georeferenced aerial imagery, but on the ground, the reclaimed pasture keeps its secrets firmly.