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“TREE TIME” THE SINGLE GREATEST CONTRIBUTION TO AMERICAN ARCHAEOLOGY THE STUDY OF TREE RINGS or THE DAY SOUTH WEST PREHISTORY STOOD STILL … » SAGUARO FOOTPRINT

Chris holding a saguaro footprint which carries no growth rings.

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OLDEST KNOWN TREE DATE 180 BC

Published May 16, 2012 at 1387 × 936 in “TREE TIME” THE SINGLE GREATEST CONTRIBUTION TO AMERICAN ARCHAEOLOGY THE STUDY OF TREE RINGS or THE DAY SOUTH WEST PREHISTORY STOOD STILL …

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