The tallest of them stands nearly two and a half metres high, and the whole row stretches just over five metres. What makes this particular alignment on the eastern spur of Bolus Head, above the northwestern shore of Ballinskelligs Bay, quietly arresting is not simply its age or its scale, but the fact that it has been absorbed into an old field wall, as if each successive generation simply built around it rather than ask too many questions.

Stone rows are a prehistoric monument type found across Atlantic Europe, typically Bronze Age in origin, though their precise purpose remains contested. Here, the four stones are graded in a recognisable pattern, tallest at the ENE end and smallest at the WSW, a feature common to Irish examples. Researcher Ann Lynch, analysing the row's orientation in 1981, concluded that its east-facing axis aligned to the northern limit of the major lunar standstill, the point at which the moon reaches the most extreme position in its roughly eighteen-year cycle. Whether this alignment was intentional or coincidental is a question the stones cannot answer. Local tradition adds another layer entirely: the row is reputed to mark the burial place of Erannan, one of the Milesian invaders, the mythological ancestors of the Gaelic Irish, said to have first made landfall at Ballinskelligs Bay below. The detail was recorded by Barrington in 1976, though the tradition itself is almost certainly much older, attaching a founding narrative to a monument whose original meaning had long since been forgotten.

The site sits on a saddle of open bogland with a wide outlook over the bay. The stones have been measured precisely, the tallest at the ENE end running to 0.95 metres across at the base, the others stepping down in both height and mass as the row progresses westward. Visitors reaching the spur of Bolus mountain should look for the old field wall into which the row has been incorporated; it is the kind of detail that could easily be read as agricultural rather than ancient, which is perhaps part of the monument's quiet strangeness.