No. I've never been there but I plan to go. I know that in Val Camonica Rock Art is great as in France near Liguria (where once was Liguria too, before second world war). Over there there's the second (or the first) Great Sanctuary in open air of Ligurians. Monte Bego and the Valley of Meraviglie, with thousand of engravings. I agree it's very interesting comparyng the two stones you showed me. What I'm trying to say too is that we belong exactly to the same culture (the two stones are an evidence). Ligurians have much more to share with northern cultures than with Romans.