Explorations in the Ecuadorian Andes have revealed a massive pre-classic ritual complex situated at an elevation of 3,200 meters. The site features a large sunken circular plaza surrounded by five monolithic stelae carved with intricate geometric patterns and feline motifs. These structures predate the rise of the Chavín culture by several centuries, pushing back the timeline of monumental architecture in the high-altitude Andes.
Excavations around the plaza uncovered obsidian blades and finely crafted ceramic offerings, suggesting the site served as a major pilgrimage destination for distant tribes. The architectural layout demonstrates a sophisticated understanding of acoustics; the circular design amplifies ritual chants and sounds directed toward the center from the surrounding mountain peaks, likely used for celestial ceremonies aligned with the solstices.