Whilst the site appears today as nothing more than an unremarkable patch of ground, its history speaks to Ireland's rich archaeological past. The feature first caught the attention of Ordnance Survey mapmakers between 1848 and 1850, who marked it as a small, unnamed rectangle on their detailed six-inch maps. However, their field notes tell a more intriguing story; they recorded it as 'Giant's Grave (Site of)' and described finding evidence of an old grave that had been roughly constructed from large stones, though these had already been removed by the time of their survey.

The original structure must have been impressive enough to earn its evocative name and warrant documentation by the meticulous Victorian surveyors. According to their Name Book entries from that period, local knowledge preserved the memory of this ancient burial site even after its physical remains had vanished. The survey team noted that whilst they could identify where the grave had once stood, no trace of the actual stones or structure remained visible on the ground, leaving them unable to determine the precise nature or age of the monument.

Today, the site remains an enigma in Ireland's prehistoric landscape. Without the physical evidence, archaeologists cannot classify the type of megalithic tomb it might have been; whether it was a passage tomb, court tomb, portal tomb, or something else entirely. The information about this lost monument was later included in Eamon Cody's comprehensive 'Survey of the Megalithic Tombs of Ireland, Volume VI', published in 2002, ensuring that even vanished sites like the Giant's Grave of Garvegort Glebe continue to form part of Ireland's archaeological record.