Morfa Harlech is a Site of Special Scientific Interest. It’s the sand dunes you can see behind the beach from the round window. But if you look at it through LIDAR, a laser view which strips away all the vegetation, a remarkable sight comes into view.
It’s a long cursus with semi-circular ends. It’s not the Old Race Course which used to be marked on old maps of the Morfa, and I have no idea what it could be. Neither does anyone in Harlech, it would appear.
So any suggestions are gratefully received. Go and have an exploration! You can park near the tip (a bit smelly) and set off on a walk.