An art style of the European Iron Age, c 500 BC, developed presumably by Celtic peoples. It originated on the middle Rhine River, extending to the upper Danube and the Marne. Its finest specimens are from the British Isles in the first century BC and AD. It appears most commonly in bronzework or other metals, weapons and horse gear, eating and drinking vessels, personal ornaments, and monumental stone carvings. It seems likely that the craftsmen worked under the direct patronage of the chieftains. Techniques employed were decoration in relief, engraving, and inlay. Stylistically, Celtic art combines elements taken from the classical world, from the Scythians to the east and from the local earlier Hallstatt Iron Age. The art developed into several styles in continental Europe (Early, Waldalgesheim, Plastic and sword styles) but came to an end with the Roman occupation. In Ireland, the art style returned after the Roman withdrawal.