They are now on display at the Carnavalet Museum.[5][6][7] Excavations at the Rue Henri-Farman site found traces of settlements from the middle Neolithic period (4200-3500 BC); the early Bronze Age (3500-1500 BC); and the first Iron Age (800-500 BC). The archaeologists found ceramics, animal bone fragments, and pieces of polished axes.[8] Hatchets made in eastern Europe were found at the Neolithic site in Bercy, showing that first Parisians were already trading with settlements in other parts of Europe.[9]