This one, in a patch of wet, poorly drained grassland near Cloghaderreen in County Limerick, is best understood from above. What appears to be the outline of a ditch barrow, a type of prehistoric funerary monument typically consisting of a central burial mound encircled by a defining ditch, is only clearly legible when viewed through aerial imagery. On the ground, the landscape gives little away.

The site came to attention through two aerial sources: an Ordnance Survey Ireland orthophoto and a Bing Maps orthoimage captured on 18 November 2018. It was compiled by Caimin O'Brien, drawing on details provided by Jean-Charles Caillère, and uploaded to the record in November 2021. The classification remains tentative, recorded as a possible ditch barrow rather than a confirmed one, which places it in that quietly significant category of sites that have been noticed but not yet fully investigated. Ditch barrows are generally associated with Bronze Age burial practice in Ireland, their circular form surviving in the soil long after any visible mounding has been eroded or ploughed away. In waterlogged ground such as this, the differential drainage between the ditch cut and the surrounding field can preserve the monument's shape in the vegetation for centuries, making it readable to a camera mounted on a satellite or aircraft even when it is invisible at eye level.

The site sits in agricultural grassland, and there is nothing on the surface that would guide a visitor to the right spot without prior preparation. The aerial images referenced in the record are the most useful starting point for understanding what is there. If you want to see the effect for yourself, the November orthoimage, taken in a season when vegetation differences tend to sharpen, is worth examining alongside the OSi orthophoto layer available through the Ordnance Survey Ireland map viewer. The wet ground conditions that make the site difficult to visit are, in a certain irony, precisely what have kept its ghostly outline readable from the sky.