A ring-barrow, a type of circular funerary monument consisting of a central burial mound enclosed by a surrounding ditch, or fosse, and an outer earthen bank, sits on the 9th fairway in a state of considerable wear. It is not a dramatic presence; the central mound measures only about 5.5 metres across, and the whole structure spans roughly 12 metres in diameter. The outer bank has been reduced to faint traces. And yet it is there, a prehistoric burial monument absorbed into the managed turf of a modern golf course.

This barrow is one of four recorded on the same course, a cluster that suggests the landscape around Palmerstown was once treated as significant ground for the communities who buried their dead here, likely during the Bronze Age. The proximity of the four monuments to one another is not unusual in Irish archaeology; ring-barrows frequently appear in loose groupings, sometimes associated with earlier passage tomb traditions or with territorial markers meaningful to communities long since gone. The specific record of this example draws on fieldwork cited by Rynne in 1991, by which point the monument was already described as very poorly preserved, its features eroded and indistinct beneath centuries of use and, more recently, greenkeeping.