It is easy to walk past without registering what you are looking at. The internal area measures roughly 30 metres north to south and 26 metres east to west, making it a modest but coherent space, and Ordnance Survey maps across multiple editions have consistently recorded its subcircular outline. No original entrance survives in any recognisable form.

Enclosures of this type are a common but poorly understood feature of the Irish landscape. Built from drystone, meaning stone laid without mortar, they could have served any number of purposes depending on their date and context, from early medieval farmsteads to livestock enclosures or the remains of more ceremonial spaces. The raised interior is a detail worth noting; it suggests the enclosure has endured considerable time without being levelled or ploughed out, which is itself a kind of quiet persistence. Without excavation, it is difficult to assign a precise period or function to the Oggal example, and the loss of the original entrance means one of the most telling clues to how the space was used and organised is no longer legible on the ground.