The mound, measuring roughly 18.9 metres east to west and 4.9 metres north to south, is thought to indicate the position of a souterrain, one of the underground stone-lined passages or chambers that were constructed throughout early medieval Ireland, most commonly as places of refuge or storage associated with ringfort settlements.

The souterrain sits within what was once a ringfort, though the enclosure itself has been levelled and is no longer visible as an upstanding earthwork. Ringforts, which are among the most numerous field monuments in Ireland, were typically circular farmstead enclosures defined by earthen banks or stone walls, and they were in common use from roughly the sixth to the twelfth centuries. The fact that the enclosure here has been levelled, most likely through centuries of agriculture, makes the residual mound all the more quietly significant. It preserves, at least in outline, the memory of a structure that would otherwise have left no surface trace at all.