Marine archaeologists have identified a previously unknown maritime trade route dubbed the 'Lead and Silver Seaway,' which connected the Phoenician heartland in the Levant to the mineral-rich Balearic Islands over 2,800 years ago. The discovery was prompted by the excavation of a sunken merchant vessel off the coast of Ibiza, which carried a massive cargo of refined lead ingots and silver-bearing ores. Chemical fingerprinting of the lead has traced it back to mines in the Iberian Peninsula, suggesting a highly organized supply chain for Mediterranean metallurgy.
This route highlights the Phoenicians' role as the 'industrial pioneers' of the Iron Age, moving beyond simple spice and textile trading to control the flow of essential industrial metals. The research team used autonomous underwater vehicles (AUVs) to map a series of secondary shipwrecks along the route, revealing that these merchants utilized a complex network of deep-water waypoints to bypass the more dangerous coastal currents of the western Mediterranean.