a frame walking
YOUR LINK HERE:
http://youtube.com/watch?v=uLZObCBnlD8
An a frame made from poles and ropes is made to stand by pulling on 4 opposing ropes tied to the apex. A rider shifts around on the base to assist the rope pullers to walk the frame -- fun to do as a race if there's a big enough space, or as timed individual runs. • See also https://www.flickr.com/photos/kelving... for some still shots
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