Nordic Bronze Age objects. These valuable metals were all imported, primarily from Central Europe, but they were often crafted locally and the craftsmanship and metallurgy of the Nordic Bronze Age was of a high standard. The archaeological legacy also comprise locally of crafted wool and wooden objects and there are many tumuli and rock carving sites from this period, but no written language existed in the Nordic countries during the Bronze Age. The rock carvings have been dated through comparison with depicted artifacts, for example bronze axes and swords. There are also numerous Nordic Stone Age rock carvings, those of northern Scandinavia mostly
Atlantic Bronze Age of bronze swords —among them carp's-tongue ones— usually found deposited in lakes, rivers or rocky outcrops; and the elites feasting gear: articulated roasting spits, cauldrons, and flesh hooks, found from central Portugal to Scotland. The origins of the Celts were attributed to this period in 2008 by John T. Koch and supported by Barry Cunliffe, who argued for the past development of Celtic as an Atlantic lingua franca, later spreading into mainland Europe. They argue that communities adopted early Late Bronze Age Urnfield (Bronze D and Hallstatt A) elite status markers such as grip-tongue swords and sheet-bronze metalwork, along with