The site at Lecks presents itself as a rath, the type of circular or oval enclosure, built from earth and stone, that was typically used as a defended farmstead during the early medieval period in Ireland. But this particular example has accumulated additional layers of meaning over time, layers that pull in quite different directions.

The enclosure measures roughly 32 metres from north-north-west to south-south-east and about 30 metres across the other axis, enclosed by a bank of earth and stone. In 1948, the scholar O. Davies proposed that the rath had at some point contained a church site, suggesting an early Christian presence within or immediately connected to the earthwork. That kind of overlap, a secular defensive enclosure later associated with ecclesiastical use, is not without precedent in Ireland, but it shifts how one reads the landscape. Alongside this, the site carries a strong local tradition identifying it as a cillín, a children's burial ground. Cillíní were typically used for the interment of unbaptised infants, who under older Catholic practice could not be buried in consecrated ground; they were often located at ancient or liminal sites, ruined churches, townland boundaries, or pre-Christian earthworks. The convergence here of a rath, a possible early church, and a traditional burial place for children gives the site a particular density of layered use and belief.

The place name itself, Killastueran, is worth pausing over. The "Killa" element likely derives from the Irish "cill", meaning church or monastic cell, which would sit comfortably alongside Davies's suggestion of an ecclesiastical connection. Whether the church, if there was one, predates or postdates the rath as a functioning structure is not recorded.