The recent discovery of a large necropolis dating back to the Gallic period (2nd-1st century BC) between Cividino and Pontoglio demonstrates the presence in this area of important fortifications which already existed during the Roman period. The river Oglio represented the border between the X and XI regions of the administrative structure organized by Augustus and it was thus provided with adequate structures to control the transit. However, these defensive structures couldn't stop the raids of barbarians who in the 5th century AD began to invade the Po Plain, causing destruction and abandonment.