It was only when satellite imagery was examined in 2017 that the feature came to attention at all, its outline emerging as an anomaly against the flat, sodden ground.

What the imagery revealed, and what a closer look confirms, is an oval enclosure measuring roughly 21 metres north to south and 18 metres east to west. Its boundary is not a wall or a ditch in any obvious sense, but a low ring of heather and bog myrtle, about 3.5 metres wide and no more than 30 centimetres high, running along the west-northwest to north-northeast arc. This slight rise may be all that remains of a levelled bank, the kind of earthen boundary that would once have defined the perimeter of an enclosed space. The interior is flat and covered with the same vegetation as the surrounding bog, including sedge, bog asphodel, bog cotton, and sphagnum moss, giving little away about what the space was originally used for. Adding further interest is a second possible enclosure of similar character located about 27 metres to the north, which raises the possibility that whatever activity took place here, it was not entirely isolated.

Enclosures of this kind turn up across Ireland in varying states of preservation, and their purposes range from early medieval settlement and livestock management to ritual use, though without excavation it is rarely possible to say which applies. At Cloondoorney More, the bog itself has done the work of concealment so thoroughly that the feature reads more as a textural variation in the landscape than as an archaeological monument. That it was found at all is largely down to the habit of examining aerial and satellite images for exactly these kinds of subtle, low-lying anomalies that ground-level survey can easily miss.