Coflein description, after visit by C-PAT:
The probable site of a stone-built cairn on the prominent shoulder (Trawsnant) of Cadair Bronwen. The cairn is fairly amorphous owing to past robbing which has resulted from the creation of a C-shaped stone shelter at this location, possibly on the southern part of the cairn. No visible internal cairn structure was evident. A low rock ridge runs west from the site and probably formed the basis for the creation of the cairn. Overall dimensions of cairn are 10.5m diameter by 0.5m high; shelter measures 6m E/W by 3.5m N/S by 1.1m high.
R. Hankinson, Clwyd-Powys Archaeological Trust, 26th October 2004