That is precisely the situation in a field of undulating pasture in Cloghaderreen, County Limerick, where a ring-barrow, a type of low circular earthwork mound typically associated with Bronze Age burial practice, went unrecorded on Ordnance Survey Ireland's historic mapping before finally being spotted from the air. The mound itself is modest in scale, with an external diameter of roughly 6.5 metres, and it sits just 50 metres northeast of the townland boundary with Ballincassa. What makes it quietly extraordinary is not its size but its company: it forms part of a cemetery of twelve ring-barrows, several of which cluster nearby, including another of the same type located just 5 metres to the northeast.

The site came to light through the Bruff aerial photographic survey of 1986, recorded under the reference Bruff 165.1, which captured the circular cropmark from above and identified it for what it was. Cropmarks form when buried or earthwork features affect the growth of grass or crops above them, making them legible from altitude even when they are invisible at ground level. Despite this early aerial identification, the barrow does not appear on any of the historic Ordnance Survey Ireland maps of the area. It only became visible through modern orthoimage analysis, appearing in OSi imagery from between 2005 and 2012, in Digital Globe imagery from 2011 to 2013, and again on a Google Earth image dated 18 November 2018. The record was compiled by Edmond O'Donovan and uploaded to the national inventory in September 2020.

Because the site lies on private agricultural land and is not marked on standard maps, there is no formal public access or waymarked approach. The mound is most legible from aerial imagery rather than at ground level, where the subtle rise of the earthwork can be difficult to distinguish from ordinary field undulation. For anyone with an interest in the wider landscape, the surrounding area repays attention: the presence of twelve ring-barrows in a single cemetery suggests this corner of County Limerick held considerable significance in prehistoric times, though the ground itself keeps that story close.