Handspinning a bridge in Peru

Jennifer Justiss shared this link to an amazing feat of handspinning...

From the Youtube description:

Published on Jun 5, 2015

Every year, local communities on either side of the Apurimac River Canyon use traditional Inka engineering techniques to rebuild the Q'eswachaka Bridge. The entire bridge is built in only three days. The bridge has been rebuilt in this same location continually since the time of the Inka.