The plough struck and dislodged a large stone, revealing an opening to a souterrain; an underground chamber built with carefully stacked drystone walls and capped with flat roof slabs. These subterranean structures, found throughout Ireland, were typically constructed during the early medieval period and served various purposes, from food storage to temporary refuge during raids.

The discovery site sits on the summit of a broad rise, with the land sloping away to the northwest, north, and east, offering commanding views of the surrounding countryside. Rather than reporting or properly exploring the find, the farmer simply covered the souterrain back over, leaving it undisturbed beneath the pasture where cattle now graze. Its exact condition and extent remain unknown, though the glimpse afforded by the displaced roof stone suggested a well-preserved example of these remarkable underground structures.

Adding to the archaeological intrigue of this hilltop, farmers have noted a patch of blackened, burnt-looking soil visible in the ploughed ground not far to the east. This darkened earth could indicate past human activity; perhaps the remains of an ancient hearth, metalworking site, or burnt structure associated with the same settlement that constructed the souterrain. Together, these features hint at a once-thriving early medieval farmstead, now hidden beneath the peaceful Donegal pastures.