A multi-disciplinary team of archaeologists and geochemists has uncovered evidence of a 2,000-year-old trans-Saharan trade network dubbed the 'Cowrie and Copper Route.' By analyzing copper ingots found in northern Nigeria and Mediterranean cowrie shells discovered in the Lake Chad basin, researchers have mapped a corridor that predates established trade routes by several centuries.
The study, published in Nature Communications, suggests that early Garamantes and Saharan middlemen facilitated the exchange of sub-Saharan minerals for North African luxury goods as early as the 1st century BCE. This discovery shifts the understanding of pre-colonial African economics, suggesting the Sahara was a highly connected space far earlier than previously believed.
Isotopic mapping of the copper reveals it originated from mines in the Aïr Mountains, indicating a sophisticated logistics network that bridged the Sahel and the Mediterranean coast. These findings challenge the narrative that significant trans-Saharan trade only began with the introduction of the camel in the 4th century CE.