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Peru Reports Earlier Astronomical Structure at Chankillo With Solar and Lunar Alignments

Researchers await radiocarbon dates to confirm the building’s age before advancing site access plans.

Overview

  • The Ministry of Culture said excavations revealed a solar‑oriented structure interpreted as predating Chankillo’s Thirteen Towers observatory, built around 250 B.C.
  • Officials emphasized that the claim of greater antiquity remains provisional pending radiocarbon results from the ongoing investigations.
  • Archaeologists identified a corridor intentionally aligned with the lunar cycle, indicating combined solar and lunar observations at the complex.
  • A Patazca‑style ceremonial vessel about one meter tall, decorated with modeled warrior figures, was found in a restricted sector, pointing to elite ritual and military authority linked to astronomy.
  • Restoration continues on the Thirteen Towers and the solar observatory with the goal of opening this sector to visitors in the coming years, and the site has been a UNESCO World Heritage property since 2021.