The Iron Age is the final epoch of the three historical Metal Ages, after the Copper Age and Bronze Age. It has also been considered as the final age of the three-age division starting with prehistory and progressing to protohistory. From Wikipedia
High-resolution near-infrared photography paired with sub-millimeter 3D modeling reveals intricate animal and mythical motifs on a Siberian ice mummy, characterizing Pazyryk tattooing as a specialized, apprenticeship-based craft.