This is the description of the main mound from the National Monuments database:
Situated on the coast at the mouth of the river Delvin. This passage tomb is part of Bremore cemetery (Rynne 1960, 79, Mound I). It comprises a circular cairn which is heavily grassed over (max. diam.29m; H 3.5m). Possible kerbstones on W side. Disturbance at NW may indicate the remains of a collapsed passage and chamber (Herity 1974, 209, 255).