The enclosure at Murrooghkilly measures roughly 28 metres east to west and 18 metres north to south, its boundary formed by a single drystone wall of modern construction. Drystone walling, built by stacking stones without mortar, is a technique used across the Burren for centuries and remains common today, which is precisely what makes dating any individual wall so difficult.

The site appeared on Tim Robinson's 1977 map of the Burren, that extraordinarily detailed cartographic project in which Robinson walked and documented the landscape of this limestone region over many years. Its presence on that map was enough to earn it entries in the Sites and Monuments Record in 1992 and the Record of Monuments and Places in 1996. When someone actually visited in 1997, the wall itself turned out to be of recent origin, which is a quietly deflating sort of discovery. What redeems the site is its wider context: the enclosure sits within a larger field system whose origins are considered likely medieval or prehistoric. Individual field walls may be modern replacements, but the layout of boundaries across a farmed landscape can preserve the ghost of much older arrangements, boundaries respecting boundaries across generations without anyone necessarily knowing why.