It rises no more than forty centimetres from the ground, its rectangular form only partially suggested by a scatter of upright slabs. Among the rubble are quartz pebbles, a detail that quietly signals ritual intent, since quartz has been associated with sacred and funerary sites across Ireland from prehistory onwards. What makes this leacht, a type of low commemorative or devotional cairn often found at early Christian sites, particularly interesting is not what survives but what has been lost.

When the Delaps visited and recorded the site in 1910, they found four slotted stones still standing at the corners of the mound, along with a fifth positioned just to the north of an adjacent ogham stone. Ogham is an early medieval script, carved as a series of notches and strokes along the edge of a stone, and its presence here suggests the site carries considerable antiquity. The Delaps' illustration indicated that the shrine was of the corner-post variety, a form in which upright slabs with cut slots anchor the structure at each corner. By the time later researchers examined the site, only that fifth stone remained visible, a sandstone conglomerate bearing an off-centre broad notch measuring roughly eighteen centimetres long by ten centimetres wide. The rest had gone, leaving the mound poorly preserved and the original arrangement readable only through the earlier record.

The site at Cool sits on the Iveragh Peninsula, the broad finger of land in south Kerry that curves out into the Atlantic. The peninsula is dense with early medieval remains, and this leacht is one of the quieter, less legible examples among them. The single surviving slotted stone is the detail most worth seeking out, a small but precise piece of evidence for what the structure once looked like when all four corners still held their posts.