High-altitude explorers in the Andes have discovered a deep cavern containing the oldest known musical ensemble in the Americas. The 'Polychrome Grotto' is decorated with vibrant mineral-based murals of dancing figures and contains a cache of tuned ceramic lithophones and percussion instruments made from baked clay, dating back 35,000 years.
This discovery pushes back the timeline of human arrival and cultural complexity in the Andes by nearly 20,000 years. The instruments are precisely calibrated to produce a pentatonic scale, suggesting that early inhabitants of the region had a sophisticated understanding of acoustics and musical theory long before the rise of known agricultural civilizations like the Caral.