Thank you for this thread, we can explore further of course and I picked up a video of one of my favourite places. This is Moel Drygarn with its three cairns. The video has the lilting tones of the Welsh language (yes there are English sub-titles) but it shows the beautiful landscape of the Preseli Hills.

https://www.youtube.com/watch?v=jAjYsjK9Ex4

I notice that 10ish minutes in that the archaeologist looks towards the North-West to Carn Alw Hillfort, still little explored by TMA, though Gladman has taken one of his excellent distance photos of it.

https://www.themodernantiquarian.com/post/143244/carn_alw.html