This rath, measuring between 20 and 25 metres across, sits elevated two metres above the surrounding fields, offering commanding views across the landscape. The massive earthen bank that once completely encircled this defensive platform still survives impressively along its northern and eastern sides, rising up to a metre in height despite centuries of weathering and the encroachment of vegetation.

What makes Lisnamulligan particularly intriguing is the local folklore surrounding it; generations of residents have passed down stories of a mysterious tunnel hidden somewhere within the fort. Whether this subterranean passage actually exists or is merely the stuff of legend remains unknown, as the site’s overgrown state makes thorough investigation challenging. Such tales are common at ringforts throughout Ireland, often reflecting folk memories of souterrains, underground storage chambers that were indeed built at many of these sites during the early medieval period.

The ringfort represents a typical example of the thousands of such structures that dot the Irish landscape, most dating from the early Christian period between 500 and 1000 AD. These were the fortified farmsteads of prosperous families, combining defensive features with practical agricultural use. Today, Lisnamulligan stands as a tangible link to Ireland’s early medieval past, its earthworks testimony to the engineering skills of its builders and the enduring nature of these ancient monuments in the Irish countryside.