The monument sits on a terrace edge above the Mill River valley, surrounded by light peat cover broken by rocky outcrops. Whilst the northern and eastern vistas stretch wide, the rising slope of Mouldy Hill curtails the view to the south and west.

The tomb itself is a partially collapsed gallery structure, roughly five metres long and aligned from west-southwest to east-northeast. A septal stone divides the monument into two roughly equal sections; a portico at the entrance and a main chamber beyond. The portico measures 1.4 metres wide at its inner end, whilst the main chamber extends 2.4 metres in length and about 1.5 metres in width. A façade stone marks the western entrance to the portico, with a leaning orthostat beside it that may have originally formed part of the gallery wall or perhaps served as outer walling. The structure retains much of its original roofing, though time has taken its toll; one roof slab now lies at an angle across the portico, whilst a massive capstone that once covered the main chamber has slipped into a sloping position due to the partial collapse of the southern wall.

The tomb’s construction details reveal the skill of its Neolithic builders. The septal stone dividing the two chambers features a curious smooth groove cut into its top, measuring 70mm long, 3mm wide and 2mm deep, though its purpose remains a mystery. The main chamber’s southern wall consisted of a single enormous stone, 2.4 metres long and 1.5 metres high, now broken with its upper portion resting against the back wall. A low, heather-covered mound about 30 centimetres high surrounds the eastern half of the gallery, measuring six metres north to south and 5.5 metres east to west. Historical records from 1848 describe the monument in much the same condition as today, though the ‘vast quantity of loose stones’ noted then has since disappeared, leaving this remarkable tomb to stand as a weathered but enduring testament to Ireland’s prehistoric past.