The description is accurate enough, though it understates the age of the thing by several thousand years. This is a wedge tomb, a type of megalithic burial monument built during the late Neolithic and early Bronze Age, characterised by a long gallery that tapers from one end to the other, with the wider end typically oriented to receive the setting sun.

The remains here form a slightly wedge-shaped gallery that opens to the south-east, measuring 3.5 metres in length and 1.75 metres wide at its north-western end, narrowing to 1.3 metres at the south-eastern opening. Each side of the gallery is constructed from a row of upright slabs, with the southern side doubled, and the north-western end curves inward where the structure is now crossed by a roadside wall. That wall is a reminder of how seamlessly ancient monuments can be absorbed into the working landscape of a place; the tomb has not been preserved behind a fence or signposted into significance, but simply incorporated into the field boundaries that islanders have been maintaining and rearranging for centuries. The name 'grave', recorded by Tim Robinson in 1980, reflects a folk memory that something about the structure is funerary, even if the precise prehistory behind it has long since passed out of living knowledge.