It reaches only 1.1 metres at its tallest point, squats rather than soars, and measures roughly a metre across its base on an east-west orientation. What makes it quietly arresting is the top: it appears to have broken off at some point, leaving the stone looking truncated, a monument that has lost something of itself to time or accident. Standing stones of this kind are prehistoric markers whose precise original purpose remains uncertain, variously interpreted as boundary indicators, ritual focal points, or memorials, and this one at Na Cúla carries that same ambiguity in its blunt, weathered profile.

The stone sits within the broader archaeological landscape of the Iveragh Peninsula, one of the more densely surveyed stretches of prehistoric Kerry. It was documented by A. O'Sullivan and J. Sheehan in their 1996 archaeological survey of South Kerry, published by Cork University Press, which catalogued the remarkable density of early monuments across the peninsula. The area around Knocknaskereighta would have been part of an inhabited and worked landscape for millennia, and the stone, however modest in scale, was presumably placed with intention by people for whom this particular slope held some meaning we can no longer recover.