 On 22 July 1915, in Lortallino, during the excavation works of the road from Bolzano Novarese to Ameno, two burials were identified.The research conducted by the Superintendency to verify whether it was isolated tombs or a necropolis was initially unsuccessful, but it was understood that other burials must have been present in the area.In the summer of 1936, following the accidental discovery of a new tomb (A 140), the honorary Inspector of Monuments for the Riviera di San Giulio, engineer Giulio Decio, conducted new excavations, identifying three other burials (A 141-143) .