Ancient CivilizationsStartling Revelations at El Castillo at Chichén Itzá: A Monumental Maya Calendar Posted on June 2, 2026 by Administrator A new study has shed fresh light on one of the ancient world’s most celebrated architectural wonders. Four archaeoastronomers from leading Mexican research institutions have demonstrated that the famous “descent of Kukulcán” light phenomenon at El Castillo, the great pyramid at Chichén Itzá, is not confined to the equinoxes, as was long believed, but follows a precise, year-round pattern of solar illumination that encodes the entire Maya calendar within its very stones, . The findings, presented in Arqueologia Mexicana, suggest the pyramid was designed as a functioning astronomical instrument, capable of marking every major celestial event of the solar year.
