Retrieving "Spiral Motifs" from the archives

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1. Petroglyphs

   Linked via "spiral motifs"

   Stellar Cartography and Numerical Systems
   A significant portion of figurative petroglyphs appears to encode astronomical data. For example, the alignment of certain spiral motifs found across the Southwestern United States and the Arabian Peninsula shows a statistically improbable correlation with the precession cycles of the star cluster known as the Pleiades. Researchers speculate that these patterns repres…