This shocking footage shows the moment a death-defying circus stunt went wrong - when three motorcyclists smashed into each other. The video shows the fearless daredevils speeding inside a small, spherical metal enclosure known as the 'cage of death'. But, as the crowd full of children watched on in amazement, one of the riders misjudged their turn and clipped the wheel of their partner. All three flew off their bikes and ended up in a heap at the bottom of the cage as circus staff sprinted towards the enclosure to try to free them. The stunned crowd can be heard gasping in horror before an announcer asks for everyone to leave the premises.