The enclosure measures roughly 37 metres north to south and 62 metres east to west, and the bank itself stands only about 0.8 metres high, which is modest enough that a casual walker might take it for a natural feature of the ground rather than something deliberately built. What gives it away is the geometry: that flattened northern side, and an interior that slopes consistently downward toward the south and west, following the inner base of the bank in a way that suggests deliberate shaping rather than accident.

The name Caherbradagh points to the structure's origins. "Caher" derives from the Irish "cathair", a term for a stone or earthen ringfort, the kind of enclosed farmstead that was a common unit of rural settlement in early medieval Ireland. Ringforts vary considerably in shape and construction, and earthen examples like this one are sometimes called raths, though the "caher" prefix here is notable. The site was recorded as part of a 1994 archaeological survey of the Ballinrobe district compiled by D. Lavelle, covering the wider area around Lough Mask and Lough Carra. Its position on a northeast-facing slope with extensive views from northwest to northeast is fairly typical of such enclosures, which were often sited to command a reasonable prospect of the surrounding landscape, whether for practical or social reasons that are now difficult to disentangle.