Not collapsed in any dramatic sense, not swallowed by a lough, but quietly buried beneath a mound of field-clearance rubble, the kind of accumulation that happens when generations of farmers heave stones off productive land and pile them somewhere convenient. The monument is still technically present, but no visible surface trace of it survives.

A cashel, to use the Irish term, is a ringfort defined by a stone wall rather than an earthen bank, typically enclosing a farmstead or small settlement in the early medieval period. This one was recorded by McCaffrey in 1952 as a circular stone fort, its perimeter formed by a collapsed drystone wall already obscured by debris at the time of survey. Immediately to the east of the enclosure, traces of four rectangular house sites were also noted, suggesting the cashel formed part of a small cluster of domestic structures rather than standing in isolation. By the time the site was more recently examined, even those traces had been overwhelmed. The marshy ground that surrounded it was presumably never ideal for tillage, which makes the decision to use the spot as a rubble dump all the more understandable, if archaeologically unfortunate.

There is little to see at Carrowmunna today, and that is rather the point. The site is a reminder that the Irish landscape contains a great many monuments that exist only in mid-twentieth-century field notes, their physical presence gradually erased by the ordinary business of farming.