Part 7/10:
Some observers speculate it resembles a stadium, given its expansive flat areas facing south towards Lake Titicaca and aligned with other significant archaeological sites like Tiwanaku and Puma Punku. Made of volcanic ash that’s been compressed into a solid form, the stones bear chiseling marks, despite the fact that cultures like the Incas had only bronze tools. Curved staircases and terraced seating indicate that it might have been used for gatherings or rituals, but its exact function continues to elude researchers.