Thousands of Ancient Petroglyphs, ‘Dramatic’ Solar Calendar Reported in N. Arizona

Posted by on Mar 28, 2016 @ 8:49 am in Conservation | 0 comments | Last modified: March 28, 2016

Archaeologists exploring the remote mesas of northern Arizona have uncovered a trove of previously undocumented rock art, including more than 1,500 petroglyphs, and confirmed the presence a prehistoric solar calendar, which has been marking the seasons for more than 700 years with a striking “shadow dagger” that travels across its sandstone face. Researchers made these...

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