It measures roughly 11.5 metres long and 5.6 metres wide, and the stones are set on their edges rather than stacked, giving the outline a low, emphatic quality that makes it look less like a collapsed wall and more like a boundary being deliberately drawn in the ground. Nobody knows when it was built, or by whom, and that uncertainty is part of what makes it quietly arresting.

The structure is recorded simply as a house of indeterminate date, which places it in a frustrating but not uncommon category of Irish archaeology: old enough to be considered a monument, too eroded or unexcavated to be pinned to a period. Oval and sub-oval house forms appear across a very wide span of Irish prehistory, from the Bronze Age through the early medieval period, so the shape alone offers little traction. What complicates the picture further is that a modern stone wall cuts across the monument at both its north-west and south-east ends, meaning later field-building has already disturbed whatever stratigraphic evidence the site might once have offered. The granite blocks themselves are characteristic of the local geology, which gives the structure an organic, almost inevitable quality, as though it grew from the same rock shelf it sits upon.