A low grass-covered tumulus on Cefnhirbrisg. It is formed of small boulders of the local stone which crops out plentifully above the surrounding soil. Its height averages 8 feet; the circumference at base is 160 feet. Rushes grow freely at its western base. It has no appearance of having been disturbed, save for the insertion of the posts of a wire boundary fence which crosses over it. -- Visited, 7th October, 1910.