The most southwesterly outpost of the Nantlle Ridge, just scraping in as a 2000fter since a 2008 survey. Pastscape have the following description for the cairn, which has the remains of a kerb:
An apparently structureless cairn, 9.14m in diameter and 1.22m high, set upon the SE end of the summit ridge of Craig Goch.
Plan and further description here: