No enclosure, no stones, no depression in the earth. The place exists in cartographic memory more than in any physical form that survives.

This is a cillín, or children's burial ground, a category of site found across Ireland where unbaptised infants and others excluded from consecrated ground were interred, often over many generations, in locations already considered liminal or ancient. The Tulrush site is associated with a nearby ringfort, one of the circular enclosures of raised earthwork that served as farmsteads during the early medieval period, roughly between the fifth and twelfth centuries. Such associations between cillíní and ringforts are not uncommon; both occupy a space slightly apart from the ordinary landscape, and the antiquity of a ringfort may have lent a particular quality of separateness that communities found appropriate for these burials. At Tulrush, the ringfort itself survives as a recorded monument, but the children's burial ground it was linked to has left no visible trace above ground.