The trip, organised by Gabe Reed Productions, saw a host of metal heroes appearing together in various European cities in March and April. One of its aims was to raise funds for the Ride For Dime charity, in memory of tragic Pantera guitarist Dimebag Darrell, who was shot and killed in 2004.

But Pantera frontman Phil Anselmo pulled out on short notice and Motley Crue's Vince Neil ended up appearing as a special guest rather than taking part in the whole tour. Cronos from Venom also cancelled.

And while Cavalera loved performing on the tour, he has vowed never to take part again unless a new crew is brought in. He tells Alternative.lv in a video interview: "I think when Phil cancelled it was really disappointing for a lot of people. I was really disappointed in him doing that and I didn't quite understand why he did it. I know Phil as a good friend and I was hoping he would be there with us.

"I guess he has his reasons - but when you promote something like this you want to make sure it works the right way. It really puts a bad taste in people's mouth when people like that don't show up.