When antiquarian Thomas Fagan visited in 1846, he found only scattered remnants of what locals called a 'Giant's Grave'; a structure that had originally measured an impressive 14 feet long and 8 feet wide, oriented east to west. The few remaining stones, standing just one to two feet high, were located about three quarters of a mile west of the road between Raphoe and Newtowncunningham, on land belonging to William Tease.

The monument's disappearance is particularly intriguing given how quickly it seems to have been forgotten. When Ordnance Survey officials attempted to verify Fagan's account for inclusion on their maps, they found that neither Tease nor the oldest residents of the townland had any knowledge of the structure, and no visible traces could be located. Today, a solitary upright stone measuring roughly half a metre on each side stands in a field that corresponds to Fagan's described location, on what was William Tays' land in 1857. Whether this modest stone is one of Fagan's documented remnants remains uncertain.

Adding another layer of mystery to the site, approximately 15 metres west of this lone stone, a large rock slab bears ancient rock art motifs, catalogued separately as a prehistoric monument. The connection, if any, between these carvings and the vanished 'Giant's Grave' remains unknown. Without excavation or further evidence, it's impossible to confirm whether Fagan's stones were truly the remains of a megalithic tomb or perhaps something else entirely; a tantalising reminder of how much of Ireland's ancient heritage has been lost to time and agricultural improvement.