greetings,
A big hello to all members of this forum, My name is 'Caveman' I have to comment on this topic although my post is 2 years going on 3 years late but I think this video will be very interesting to all members of the forum.
I think people should watch the video
http://www.youtube.com/watch?v=sDNw2slOK3Y
it was shown on the discovery channel about the 'chakar'
so please all watch it and it will answer your questions...
regards