The Golasecca culture was the fundamental ethnic-cultural entity before the Gallic invasions (388 BC) and Romanization (second–first century BC) of western Lombardy, eastern Piedmont, the Ticino Valley and Misox (de Marinis 2009, 11-30). Its territorial extension is quite well known: almost 200 sites allow us to fix the boundaries between the Alpine watershed to the north and the River Po to the south, and between the rivers Sesia to the west and Serio to the east.