The enclosure measures roughly 25 metres by 20 metres, a modest but deliberate space whose straight lines suggest a planned, functional origin rather than a natural feature. What makes it quietly odd is the way it has been partially swallowed by later use of the headland, the southern side undercut by the very route that leads up to the signal tower above it, two different periods of human activity colliding in stone and earth.

The signal tower on Bray Head belongs to a network of such structures built along the Irish coastline during the Napoleonic Wars, when the British government moved to establish a chain of coastal lookout points to watch for French naval movements. The enclosure incorporated into its southern side almost certainly predates this early nineteenth-century construction, though the available record does not pin down its precise age or original purpose. Enclosures of this general type on the Iveragh Peninsula can range from early medieval farmsteads to prehistoric field boundaries, and the Iveragh peninsula as a whole is extraordinarily dense with such remains, documented in the archaeological survey compiled by Aidan O'Sullivan and Jerry Sheehan and published by Cork University Press in 1996. That survey brought together a systematic record of the area's monuments, and this enclosure appears among them as one small piece of a much larger archaeological picture concentrated along the Atlantic edge of south Kerry.