This mysterious stone setting, first documented by L. McGill in 1964 and later by P.J. McGill in 1970, consists of roughly a dozen stones forming an incomplete oval shape. The formation measures approximately 4 metres from north to south and 3 metres from east to west, though time and the encroaching bog have left the original structure's purpose frustratingly unclear.

The stones themselves vary considerably in prominence; one stands a full metre high, whilst another reaches half that height, and the remainder barely peek above the surface of the bog-grown land. This variation in height might suggest differential settling over the centuries, or perhaps the stones were always meant to be of different sizes. The site has been tentatively identified as a possible court tomb, a type of Neolithic burial monument common in Ireland, though the incomplete nature of the oval and the limited archaeological investigation mean this classification remains uncertain.

What makes this site particularly intriguing is its ambiguous nature; it defies easy categorisation within Ireland's rich catalogue of megalithic monuments. Recorded in the Survey of the Megalithic Tombs of Ireland in 2002, the Gortnacart Glebe stones remain officially unclassified, a reminder that even in well-studied archaeological landscapes, mysteries persist. Whether this was once a grand tomb, a ceremonial site, or something else entirely, the bog keeps its secrets well, offering only these weathered sentinels as clues to a distant past.