Tumulus culture
The Canegrate culture (13th century BC) may represent the first migratory wave of the proto-Celtic population from the northwest part of the Alps that, through the Alpine passes, had already penetrated and settled in the western Po valley between Lake Maggiore and Lake Como (Scamozzina culture). It has also been proposed that a more ancient proto-Celtic presence can be traced back to the beginning of the Middle Bronze Age (16th–15th century BC), when North Westwern Italy appears closely linked regarding the production of bronze artifacts, including ornaments, to the western groups of the Tumulus culture (Central Europe, 1600–1200 BC). La Tène cultural material appeared over a large area of mainland Italy, the southernmost example being the Celtic helmet from Canosa di Puglia.