This site is of disputed antiquity. If you have any information that could help clarify this site's authenticity, please post below or leave a post in the forum.
The stone is immediately to the south of the track. GPS reading SH 6926 7223.
It is 1.75m long, 0.55m wide, 0.55m deep and is leaning over at a marked angle. It is not listed by either Coflein or the Gwynedd Archaeological Trust - I will contact the latter to ask why not.