A breakthrough study by an international team of marine archaeologists has identified a major prehistoric trade route dubbed the ‘Obsidian and Jasper Seaway.’ By analyzing mineral signatures from artifacts found in underwater sites off the coast of modern-day Tanzania, researchers have traced the materials back to volcanic sources in the Persian Gulf and the Ethiopian Highlands. This discovery pushes back the timeline of trans-oceanic exchange in the Indian Ocean by nearly a millennium.
The findings suggest that ancient mariners utilized seasonal monsoon winds to navigate the vast distances between the Arabian Peninsula and East Africa as early as 2,500 BCE. The presence of specialized jasper beads and obsidian blades in early Swahili settlements indicates a sophisticated network where luxury goods were exchanged for local resources like timber and aromatics. This research fundamentally shifts our understanding of the connectivity between ancient Afro-Eurasian civilizations.