"You could very easily die in there." Slaughter To Prevail, bare-knuckle boxing and brain injuries: Inside the bloodiest, most brutal metal gig ever.

"You could very easily die in there." Slaughter To Prevail, bare-knuckle boxing and brain injuries: Inside the bloodiest, most brutal metal gig ever.

Ding! The bell rings and all eyes snap back towards the bare-knuckle boxing ring in the centre of the arena. Alex Terrible, the Russian-born singer of Slaughter To Prevail, and Cameron Delano, an American bullrider built like a piece of farm equipment, rise to their feet, visibly exhausted, and step back to the centre of the ring. Both fighters are bloody, with faces swelling. Alex’s nose is broken, and he keeps wiping the blood from his face, y…