We had the same question DGM, but they told us that within living memory it had always been there. Close by there were other huge rocks and strange enough with different colours. So that indicates that these rocks were not left at the plateau by a natural cause. I will upload another rock picture.
Yes Lydia, we saw the Sidobre rocks, balancing on smaller ones, quite impressive. Unfortunately, it was at the time that we did not make pictures but only films (because of our small children). I have a period of 7 years without any (own) photographs, such a pitty!
Kella, I can more or less understand Italian, but I cannot write in Italian.
You are right, it is amazing that this rock keeps it balance, but it did as long as people can remember.
Thank you Joe, it was huge, indeed! Mostly I wait until all tourists or passengers-by are out of my view, but here I was glad that someone was passing. He served as a reference!.