It measures roughly fifteen metres across, defined by a stone wall that has long since been swallowed by grass, making it visible only when aerial photography catches the right angle of light or shadow. That it survives at all in legible form, within a wider field system that has itself endured across centuries of farming and land clearance, gives it a quiet significance out of proportion to its modest size.

Enclosures of this subcircular type are found across Ireland and generally date to the early medieval period, though without excavation it is difficult to assign a precise date to any individual example. They may have served as farmsteads, as enclosures for livestock, or occasionally as ecclesiastical sites. What makes the Kiltaan example particularly interesting is its setting. It sits within an extensive ancient field system and lies only around ten metres from a second enclosure to the north-west. A further ten metres or so, across the road to the south-west, the medieval church and graveyard at Noughaval occupy the same quiet landscape. The clustering of these features, enclosures, field boundaries, and an early church within such a compact area, suggests a long continuity of human activity in this part of the Burren, where the same thin-soiled but manageable terrain attracted settlement repeatedly over many generations.