Thursday, 5 February 2015

Ancient Texas pictograph mystery solved

Ancient Texas pictograph mystery solved

Among the mysteries of how ancient people created structures to mark the solstice and equinox with astonishing accuracy, this one is central: How did they determine the dates of those astronomical events? Close view of the wide variety of pictographs at the Campbell Ranch near Paint Rock [Credit: Ann P. White/Chronicle]Houstonian Gordon Houston, who is pursuing a doctorate on this riddle, says he believes he has figured out the answer... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]

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