The monument sits just 200 metres from the seashore, with an extensive outlook in every direction except south, where the hilly ground near Crohy Head forms the skyline. Known locally as An Roisín Theas, the tomb represents one of Ireland's characteristic megalithic monuments, though time and possibly stone robbing have taken their toll on its original structure.

The tomb consists of an unroofed chamber entered from the east-southeast through what appears to be two portal stones, though the southern one leans against its northern companion and sits slightly forward. These impressive stones stand about 2 metres high, marking the entrance to what was once a chamber approximately 3 metres long and just over a metre wide. Today, only single orthostats remain on each side of the chamber, which closes at the back with a roughly gabled stone. Several displaced stones lie scattered around the monument, including a substantial block measuring 2.2 by 1.5 metres lying south of the chamber. Intriguingly, a field wall now runs through the northern side of the structure, incorporating some of the ancient stones into its construction.

Historical records reveal the tomb was in better condition during the late 18th century. Watercolours from 1799, preserved in the Royal Irish Academy, show both sides of the chamber intact with a large roofstone resting horizontally over the inner half. These detailed drawings indicate that at least two orthostats have been lost from the structure since then, along with the roofstone that measured nearly 3 metres by 1.65 metres. The artwork also shows a large displaced slab in front of the entrance, which may have originally served as a second, high-pitched roofstone that would have rested against the portal stones, creating the characteristic sloping profile typical of portal tombs like the one at Malin More in the same county.