This one in Camas, County Limerick, does the opposite: it barely exists at ground level at all, and is most legible from the air, or from a satellite image taken on a clear April morning. What lies beneath the wet flat pasture here is, in all likelihood, a ditch barrow, a type of prehistoric funerary monument defined by a circular enclosing ditch, sometimes surrounding a burial mound, sometimes not. The ring-ditch at Camas measures approximately fifteen metres in diameter, a modest but coherent form that only reveals itself under particular conditions.

The site was first brought to attention during a Bruff aerial photographic survey in 1986, when an image catalogued as Bruff 51.02, AP 4/2061 showed what appeared to be a circular enclosure on the ground. No trace of it had ever been recorded on Ordnance Survey Ireland historic maps, which means it went unnoticed through the entire modern cartographic tradition. Decades later, the cropmark of the ring-ditch reappeared on a Google Earth orthoimage dated 4 April 2013, and a fainter trace was visible again on OSi orthophotos taken between 2005 and 2012, as well as on a Google Earth image from September 2020. Cropmarks form when buried ditches or features retain moisture differently from the surrounding soil, causing the vegetation above them to grow at a slightly different rate, a difference invisible at eye level but readable from above. The site sits 105 metres southeast of the Morningstar River, which marks the townland boundary with Carrigeen, and two other enclosures lie within 30 metres to the southwest and northwest, suggesting this corner of Camas held some significance in the past that has yet to be fully understood.

There is no visitor infrastructure here, and because the feature is subsurface, there is nothing to see on foot in ordinary conditions. The pasture is privately owned farmland. The most practical way to examine the site is through the Google Earth orthoimages referenced in the archaeological record, particularly the April 2013 image where the ring-ditch is most clearly defined. For anyone with an interest in how aerial and satellite photography has transformed Irish archaeology, this site is a useful case study, compiled by Fiona Rooney and uploaded to the record in April 2021, in how entire categories of monument can remain invisible until the light, the season, and the camera angle briefly align.