Bullroars or Bullroarers were used by many ancient people around the world for music, in ceremony and also for communicating over great distances.
This bullroar is made of chechen wood, it's 13"x3". The cord is made of waxed hemp.
To make sound; In your hands wind the wood piece one direction then throw it up in the air and spin in the opposite direction it has been wound. Bullroar can be spun above your hand or out in front of you.