Experts say a petroglyph in New Mexico’s Chaco Canyon may depict a solar eclipse from 920 years ago.
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Photos: Watch the ‘Shadow Dagger’ Solar Calendar Mark the Equinox
See for yourself how ancient petroglyphs found in Arizona mark the spring equinox with a “shadow dagger.”
Read MoreThousands of Ancient Petroglyphs, ‘Dramatic’ Solar Calendar Reported in N. Arizona
Archaeologists have uncovered a trove of previously undocumented rock art in northern Arizona, including a prehistoric solar calendar that has been marking the seasons for more than 700 years.
Read MoreCeremonial ‘Axis’ Road Discovered in Heart of Ancient City of Cahokia
After more than 85 years of study and speculation, recent digs have confirmed the presence of a ceremonial road running through the heart of Cahokia, the largest prehistoric city north…
Read MorePrehistoric Meteorite ‘Shrines’ in Arizona May Be Linked, Says Archaeo-Astronomer
Two twelfth-century settlements a hundred kilometers apart in Arizona were apparently built by discrete cultures, but they have at least one trait in common: In each complex is a hidden,…
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