It is a cashel, the Irish variant of a ringfort built from dry-stone walling rather than earthen banks, and this particular example at Lismoher measures roughly 25 metres in diameter. Its defining wall has been worn down to a maximum height of about one metre and an estimated width of three metres, with stone spread extending five to six metres both inward and outward from the line of the wall. The southern outer face is still legible if you know what you are looking for, but the overall impression is of collapse and time, the structure dissolving back into the land around it.

What gives the site its quiet interest is not the cashel alone but the company it keeps. It sits within a large multiperiod field system, meaning the landscape here preserves traces of human activity from several distinct eras, layers of enclosure and cultivation that accumulated over centuries rather than decades. Within 120 metres to the north-west lie two further monuments, another cashel and a related enclosure, and roughly 90 metres to the south-west there is a cairn, a mound of stones typically associated with burial or commemoration in prehistoric contexts. The cashel itself was already being recorded in the late nineteenth century, appearing on the Ordnance Survey 25-inch plan of 1897 and again on the six-inch edition of 1920, by which point it had presumably long since fallen out of use. Whether it functioned as a farmstead enclosure, a place of local authority, or something more modest is not recorded, but the density of related monuments nearby suggests this corner of Clare was once considerably more organised and inhabited than its current rough pasture implies.