Enclosure, Ballybranagan, Co. Cork
Co. Cork |
Enclosures
At Ballybranagan in County Cork, an entire ancient enclosure lies invisible at ground level, legible only from the air.
No earthwork rises from the field, no stones break the surface; instead, the structure announces itself through a crop mark, the faint differential in how plants grow over buried features, betraying the presence of something substantial underneath.
What the aerial photograph reveals is a bivallate enclosure, meaning one defined by two concentric rings of banks and ditches rather than a single circuit. The inner diameter runs to roughly 57 metres, the outer to around 88 metres, giving the whole monument a considerable footprint for this class of site. Enclosures of this type are broadly associated with the early medieval period in Ireland, though without excavation it is difficult to say more with precision about who built this one or what it was used for. The photograph, held in the Cambridge University Collection of Aerial Photography, captures the two rings as a roughly circular form pressed into the cropland. The southern and south-eastern portions of the outer defences have been disrupted, truncated by a field fence on one side and a farm building on the other, so even the aerial view is incomplete.