This is a leacht, a type of commemorative cairn or altar-like monument associated with early Irish Christianity, typically marking the grave or memory of a saint or significant figure. It is not a dramatic ruin by any measure, but its placement tells a quiet story about how monks organised sacred space on the margins of the inhabitable world.

The leacht occupies the north-western area of the monastic enclosure on High Island, positioned close to the north-western entrance to that enclosure and not far from the site's church. When recorded, only one to two courses of the southern and western sides of the structure remained standing, suggesting centuries of weathering and likely disturbance. According to work carried out by Scally in 2014, the leacht has since been rebuilt, meaning what a visitor sees today is a reconstruction informed by surviving fabric rather than an untouched original. This is not unusual for early ecclesiastical sites, where conservation sometimes involves consolidating or partially restoring collapsed features to stabilise and interpret them, though it does change the nature of what you are looking at.