Easter Island moai 'walked'

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Comment by Dr. Krishna Kumari Challa on October 29, 2012 at 7:34am

http://www.sciencedirect.com/science/article/pii/S0305440312004311

The ‘walking’ megalithic statues (moai) of Easter Island

Explaining how the monumental statues (moai) of Easter Island were transported has remained open to debate and speculation, including their resource expenditures and role in deforestation. Archaeological evidence including analysis of moai variability, particularly those abandoned along ancient roads, indicates transport was achieved in a vertical position. To test this proposition we constructed a precise three-dimensional 4.35 metric ton replica of an actual statue and demonstrate how positioning the center of mass allowed it to fall forward and rock from side to side causing it to ‘walk.’ Our experiments reveal how the statue form was engineered for efficient transport by a small number of individuals.