This is a burial chamber that was built by cavemen. Ancient! There were lots of ancient ruins in Wales, all over the maps. Most of them were not on our route. The ones that we saw, most of them were high up on the mountain. And there's nobody looking after it, doesn't even have a fence. This one had a fence but nobody was there. It was just in the middle of a field. Even with the fence, I think if someone wants to vandalise it, it's not going to stop him.