Note: Located in the shallows at the east end of Neuchâtel lake; site of important Iron Age remains, giving its name to a period of European Celtic culture dating 500 BCE-200 CE; in original settlement, Celts had driven piles into the edge of the lake and constructed 2 timber causeways; artifacts include iron swords and other weapons, and everyday objects made of iron and wood, some decorated with distinctive curvilinear and abstract designs.