The ringfort at Bindoo in County Cavan is a respectable example of its type, a raised circular enclosure roughly 31.9 metres across internally, ringed by a substantial earthen bank and a shallow fosse, the fosse being the ditch dug to provide material for the bank itself. Ringforts, or raths, were the dominant form of rural settlement in early medieval Ireland, typically serving as enclosed farmsteads for a single family and their livestock. Most survive as straightforward, legible earthworks. This one has a complication.

At some point after the original construction, a significant deposit of earth was heaped up against the outer face of the bank along a sweep running from the north-northeast around through south to southwest. In the same area, the fosse has been noticeably narrowed. Whether this was deliberate reinforcement, the gradual result of agricultural activity, or something else entirely is not recorded. The original entrance to the enclosure has been lost, leaving no obvious indication of how people once moved in and out of the interior. That absence is itself telling: entrances are often the most durable and readable features of a ringfort, and when they vanish, it usually means the ground around them has been disturbed significantly over the centuries.