The monument comprises a partly rock-cut structure, obscured by dense vegetation gowing over it and by roof collapses in two places. Where the roof has collapsed there are two openings, through one of which can be seen the upper levels of irregular drystone masonry forming the chamber, and the roofing at the northern end of the chamber.
Here, the W wall consists of natural sandstone, presumably quarried to create the chamber, while three to four courses of drystone, slightly corbelled masonry form the E and N walls. The roof survives in only two places: a single slab spans the vault of the chamber between the two openings; while the final c.1.3m length of the chamber at the NW end is fully roofed.
The chamber measures at least 3.7m and is 1.7m wide at its first corbel. The surviving roof slabs measure c.0.5m by 0.5m and are c.0.15m thick. Collapsed roof slabs are visible within the SE half of the chamber. Soil and rotting vegetation have largely infilled the chamber through the two openings in the roof and it is not possible to determine the height or full ground-plan of the chamber.
The chamber is overlooked by an earthen slope on the SE and NE sides, standing some 1.8m above the roof level. It is possible that this depth of overburden may conceal further elements of the chamber (for example, side-chambers or a separate access passage), or other associated remains.
The area to be scheduled includes the souterrain and an area around it in which related remains may be expected to survive. It is circular in shape, with a maximum diameter of 20m, as marked in red on the accompanying map.