The Grotta dell’Eremita (Borgosesia, VC) is situated on Monte Fenera mountain, the only complex of sedimentary rocks in the Valsesia. The area is protected from the Monte Fenera Natural Park . The calcareous-dolomitic banks are characterized by many cavities and in the Jurrasic formations (Low and Middle Lias) the presence of gray silex is noticeable.

Further archaeological discoveries dating back to different eras – from Middle Palaeolithic to the Middle age – have been made. The cave, at 595 m. above sea level, on the western side of the mountains is a small cavity and it develops for about 6 meters long. In 2012 University of Geneva has undertaken excavations aimed at identifying the stratigraphic sequence of the deposits relating to the human occupation in various periods and the succession of natural events. Various ceramics contemporary, some historic, proto-prehistoric fragments and some metallic jewellery elements were found (Middle Bronze Age).