The site known as Caherbeg at Caherapheepa is a cashel, a type of early medieval stone ringfort built from drystone walling without mortar, and it survives only just. Its roughly circular outline measures approximately 27 metres across, but the wall that once defined it has largely fallen in on itself, and a later field boundary has been built directly over part of it, running from the western to the northern arc.

What makes the site particularly elusive is not just its physical decay but what may lie within it. Writing in 1916, a scholar named Redington noted internal divisions inside the cashel, suggesting the space was subdivided, perhaps into separate enclosures or structural compartments, as was sometimes the case in more elaborate ringforts. By the time McCaffrey documented the site in 1952, those divisions could no longer be seen at all, obscured entirely by dense overgrowth. The cashel had, in effect, swallowed its own interior. Whether those internal features still exist beneath the vegetation, or have themselves collapsed beyond recognition, is an open question the site declines to answer easily.