It is, in fact, a megalithic cairn roughly 32 metres across and up to two metres high, and at its centre lies a stone-built gallery, a roofed or once-roofed passage formed by five stones, aligned on a northwest to southeast axis. A standing stone a short distance to the southwest hints at a possible second chamber. A boundary wall has clipped the edge of the cairn at some point, and a large depression has opened up in its southern half, signs of the slow attrition that unprotected ancient monuments tend to suffer. What remains is partial, windswept, and quietly compelling.

By 1837, when Ordnance Survey officers were compiling their letters and sketch maps of the area, the site was already being called the Giant's Grave, a folk name applied across Ireland to ancient burial monuments whose true origins had long been forgotten. The accompanying note recorded that a cromleac, the older term for what we would now call a dolmen or portal tomb, had once stood here but was by then destroyed. The surviving structure is classified as a gallery grave, a form of megalithic tomb in which the burial chamber takes the shape of an elongated, roughly parallel-sided corridor. Powell listed it as such in 1941, and by the 1970s researchers recorded three large granite slabs still visible above ground. The monument has been protected under a preservation order since 1940, issued under the National Monuments Acts.

The tomb sits in pasture on a southwest-facing slope, which means the ground can be soft underfoot in wetter months. There is no formal visitor infrastructure, and the site is on agricultural land, so any approach should be made with awareness of that. The furze covering the cairn can obscure the stonework, particularly later in the season when the vegetation is fuller, so earlier in the year tends to give a clearer view of what remains. The gallery itself is modest in scale, just under two metres in length, but the five stones that form it are worth examining closely, particularly for anyone interested in how prehistoric builders used the local granite of the Dublin Mountains.