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* Elaborate rock murals along the U.S.-Mexico border, dating back over 4,000 years, depict a sophisticated cosmological worldview shared by indigenous cultures. These murals feature human-like and animal-like figures alongside symbolic motifs representing creation myths, cyclical time and multidimensional realities. * Despite spanning 175 generations, the Pecos River Style (PRS) rock art maintained strict iconographic rules—black paint first, followed by red, yellow and white—demonstrating a structured visual language rather than random decoration. * The murals align with pan-indigenous beliefs, such as layered universes and portals between worlds. A Huichol shaman recognized the figures in the 2000s, confirming continuity with modern...

A new analysis of artwork left behind by the enigmatic inhabitants of the abandoned Mesoamerican city Teotihuacan suggests the colorful pictures and shapes may constitute a rudimentary language that ultimately evolved into the language of the Aztecs.If the team of researchers behind the discovery can successfully decipher the "lost language," they believe it could offer clues about the identity of Teotihuacan's builders and the reasons they abandoned the once thriving metropolis...Previous excavations and decades of research have determined that Teotihuacan was founded sometime around 100 AD. Researchers have also determined that the massive complex of buildings and roadways likely supported...