 In the area there are two necropolises of the Lepontii-Celtic culture, dating to 2nd century BC – 1st century AD.From the 14th century to the late 19th century, Ornavasso and its "frazione" of Migiandone were a language island of Walser German, due to the presence of immigrates from the Simplon area.Traces of the German culture persist in the local dialect and the Carnival tradition.