In the low-lying wet pasture of Ballyholahan in County Tipperary, there is an enclosure that cannot be seen by anyone standing in the field itself. It shows up in aerial photography as a circular mark roughly twenty metres across, a ghostly ring pressed into the ground that the naked eye, at ground level, simply cannot resolve. This kind of cropmark or soilmark is often all that survives of an early enclosure, the buried outline of a ditch or bank that once defined a settlement or boundary, its physical form long since levelled by centuries of agriculture and waterlogged ground.

The site sits in a cluster of related features, which is characteristic of how early medieval communities organised their landscape. Immediately to the south-east of a separately recorded enclosure that has itself been levelled, and with a ringfort visible approximately two hundred metres to the north, the Ballyholahan enclosure forms part of a quiet concentration of ancient activity in this corner of Tipperary. Ringforts, the most common monument type in Ireland, were typically circular earthwork enclosures used as farmsteads during the early medieval period, roughly the fifth to the twelfth centuries. That this enclosure sits in wet pasture, and survives only as a cropmark, suggests it belongs to the same broad tradition, though the waterlogged conditions that obscure it at ground level may also, in some respects, have helped preserve the buried evidence beneath.