A team of high-altitude archaeologists has discovered a prehistoric ritual complex at 4,200 meters above sea level in the Cordillera Blanca. The site, featuring four massive granite monoliths known as the ‘Sky Pillars,’ is aligned precisely with the rise of the Pleiades star cluster during the Southern Hemisphere's winter solstice. This discovery indicates that early Andean cultures possessed advanced astronomical knowledge as early as 2,000 BCE, long before the rise of the Chavín or Inca civilizations.
The central plaza of the complex is paved with white quartz crystals, which would have reflected moonlight during nocturnal ceremonies. Excavations around the base of the pillars have yielded offerings of Spondylus shells from the coast and obsidian from the southern highlands, indicating that this ‘Sky Pillar’ site was a major pan-Andean pilgrimage center. The findings suggest that early mountain dwellers used these alignments to manage a complex agricultural calendar suited for the extreme conditions of the high-altitude tundra.