It measures six metres by three, with walls that survive only to about thirty centimetres in height and a metre in width, more like a thickened seam in the ground than anything obviously built. What makes it quietly arresting is not its size but its position: pressed against the outer face of the graveyard wall, right at the threshold of what appears to have been an early ecclesiastical enclosure.

The structure was identified between 2004 and 2006 during a research and teaching project run by the UCD School of Archaeology across three field seasons. Its precise relationship to the graveyard entrance led researchers to suggest it may have functioned as a pilgrims' hostel, or simply a sheltered sleeping place for those who had travelled to the site. Such arrangements were not unusual in early Irish ecclesiastical contexts, where graveyards often formed part of a wider sacred enclosure, and where overnight stays by pilgrims or mourners were a recognised practice. The building sits immediately beside what may be the boundary of that enclosure, the kind of liminal position that would have made practical and symbolic sense for a structure intended to receive outsiders before they passed within.