The Pazyryk culture is a Saka nomadic Iron Age archaeological culture identified by excavated artifacts and mummified humans found in the Siberian permafrost, in the Altay Mountains, Kazakhstan and Mongolia. 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.