The monument sits 450 metres from the western shore, surrounded by frequent outcroppings of rock that punctuate the rugged terrain. At its heart lies a stone gallery measuring five metres in length, oriented east-northeast, with what appears to be a single remaining courtstone positioned just 40 centimetres from its northern entrance.

The gallery itself showcases the sophisticated construction techniques of Ireland’s Neolithic builders. Two pairs of carefully matched orthostats form the sides, creating a space that swells to 2.3 metres at its widest point before tapering to 1.5 metres at both ends. The entrance, flanked by two jambs set 45 centimetres apart, leads into this chamber where a tall, gabled backstone, leaning slightly inward, seals the rear. The northern entrance jamb sits longitudinally inside the gallery wall whilst its southern counterpart is positioned transversely, partially overlapped by the gallery side. This arrangement, along with the paired orthostats, suggests the interior may have originally been divided into two separate chambers.

When antiquarian Thomas Fagan visited in 1847, he recorded an additional upright stone that has since vanished; a substantial piece standing about 2.75 metres from the gallery’s southeast angle. By the time William Borlase documented the site fifty years later, other stones had appeared nearby, though these too have disappeared. Today, a fence runs close to the monument’s southern side, and whilst some large slabs incorporated into it may have originally formed part of the tomb, only faint traces of the original mound remain visible to the north and west. Despite these changes and the passage of millennia, the gallery continues to stand as a testament to the engineering skills and ritual practices of Donegal’s prehistoric communities.