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I visited the site on February 02, 2013. Except for porphyroid outcrops, there is no doubt, for my experience, that findings described are not casual. There is a precise orientation. Petroglyphs are evident. I think that these sites of Val Ceresio were freqented, presumably, from Neolithic. Further studies are desirable. The findings could also be described in connection with the nearby Neolithic hill settlement of Tremona (TI, Switzerland), also on the slopes of Monte San Giorgio.
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