It is not. The mound is a cairn, a type of ancient burial or ceremonial monument typically constructed by heaping stone and earth over a site of significance, and this one commands an uninterrupted view in every direction, with Nephin Mountain visible to the northwest across the bog-rich Mayo terrain.

The cairn is sub-circular in plan, measuring roughly 13.5 metres from east to west and 12 metres from north to south, and its edges are defined by a scarp, a low step or drop in the ground, that stands about 1.1 metres high on the eastern side and 0.8 metres on the west. The top surface is fairly level but far from smooth; stones push up through the sod at irregular intervals, giving it a slightly restless texture. The southern side is the least distinct, where the monument grades almost imperceptibly into the surrounding ground. Close by, on the hilltop to the north of the cairn, faint traces of cultivation ridges running on a north to south axis suggest that the land around it was worked at some point, likely in a much later era than the monument itself, leaving two different periods of human activity layered quietly into the same slope.