This room at Pueblo Bonito is remarkable for the perfectly preserved cottonwood roof beams. Thousands of samples have now been used for dendrochronology (tree ring analysis) and allowed dating of individual building projects.
Copyright: G. Donald Bain Type: Spherical Resolution: 8000x4000 Taken: 08/05/2014 送信日: 27/01/2015 Published: 10/03/2015 見られた回数:
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