The monument consists of a stone circle set upon a partly artificial platform on the S slopes of Ben Langass. The "circle" is, in fact, oval in plan, 37m E-W by 30m N-S. It consists of 24 upright stone slabs and boulders, together with a similar number of recumbent stones. On the SE side, two stones are set quite clearly out of alignment with the rest of the ring, but very close to its projected course. The platform on which the circle stands is formed of a scoop into the slope, with a back-scarp 1.5m high at maximum on the N and a dumped platform up to 2m high on the S.
The platform is only just large enough for the stone circle, and the upright stones of the S part of the circle stand on the edge of the platform. A rubble wall has been built between the uprights on the N side, but this appears later than the circle, whereas the platform very clearly antedates the erection of the stones. The monument commands a wide open prospect from SE through S and W to NW. The area to be scheduled is a quadrilateral of about 3 hectares, bounded on the S by the shore of Loch Langass.
The W, N and E sides are 150m, 150m and 220m long, while the S, shore, side is approximately 250m long, as shown in red on the accompanying map. This area is drawn wide to ensure that the open aspect of the monument, which would have been essential to its purpose, is safeguarded.