Well, this is one of the topics/reasons for the human mind to capitulate. Maybe the answer can be given by AI? 🤔 I doubt it. 😅 We were discussing this topic when you showed pictures of a menhir, I remember that. The case is the same. And I can add one more such - the rock niches. Well, life is interesting after all. As I've said before, if we knew everything, the world would be an endlessly boring place. On the other hand, we are so advanced (supposedly) in technology and other things, or at least we claim to be advanced, but so many, even basic things remain unexplained. Then we pretend not to notice these things, that they are not so important. Only because we cannot explain them and know nothing about them.