A multi-national team of researchers has mapped a previously unknown 'Lapis and Silver' trade route connecting the ancient Indus Valley Civilization to the Caucasus Mountains. By utilizing lead-isotope analysis on silver ingots and trace-element fingerprinting on lapis lazuli beads, the study proves that a sophisticated 4,500-year-old network bypassed traditional mountain passes in favor of semi-arid lowland corridors.
This discovery provides crucial evidence for the economic complexity and geographic reach of early Bronze Age societies. The findings suggest that these trade links were not merely for luxury goods but served as vital conduits for technological exchange and diplomatic missions across thousands of miles of varied terrain, reshaping our understanding of prehistoric globalization.