New archaeological evidence has revealed a sophisticated maritime trade network that connected the Gulf of California with the northern Andes nearly 3,000 years ago. By utilizing trace-element analysis on obsidian tools and cinnabar pigments, researchers have demonstrated that coastal communities were engaged in long-distance exchange via specialized seafaring rafts.
This Obsidian and Cinnabar seaway likely facilitated the spread of early metallurgical techniques and ritual ideologies across the Americas. The study suggests that prehistoric maritime technology was far more advanced than previously thought, allowing for consistent contact between Mesoamerican and South American cultures long before the arrival of Europeans.