That uncertainty is itself part of what makes the site at An Eaglais quietly interesting. A rath, which is a circular earthen enclosure typically associated with early medieval settlement in Ireland, usually tells one kind of story. When later structures appear inside one, the narrative becomes more layered and harder to read.

The rath in question, a univallate example, meaning it has a single enclosing bank rather than multiple concentric ones, sits on a gently south-south-west facing slope. Within its interior, pressed into the south-western quadrant, are the foundations of a drystone rectangular house. Drystone construction uses no mortar; stones are carefully chosen and stacked so that the structure holds together through weight and friction alone. The building measures 7.3 metres east to west and 2.2 metres north to south, a long, narrow footprint, with walls surviving to roughly 0.75 metres in height. To the north, a separate and possibly contemporaneous structure uses the old ringfort bank as one of its walls, with a low stone wall running 12.7 metres east to west forming the other side. That enclosed space is about 2.3 metres wide and appears to have been divided internally at roughly its midpoint, suggesting some functional distinction between the two halves, perhaps storage separated from shelter, or animals from people. These details were recorded and published by J. Cuppage in the 1986 Corca Dhuibhne archaeological survey of the Dingle Peninsula, a landmark regional study that documented a remarkable concentration of field monuments across this part of west Kerry.