Visited the Ffridd Newydd circles last year after Cors Y Goedal, there are still a couple of stones (the largest aprox 1m tall) visible of the southern circle along with traces of earthworks, the smaller northern circle is in worse condition and survives only as a faint earthwork. Unfortunately I went right at the end of the day and arrived at the circles as darkness fell and my shots are poor. If you like great piles of stones the much re-arranged Llecheiddior Cairns are worth the short detour from the path on route.