The tour also features Five Finger Death Punch, Mastodon, Amon Amarch, Machine Head, Children Of Bodom and many others.

Zombie is on the road promoting his new album, "Venomous Rat Regeneration Vendor," and he's looking forward to playing to as many fans as possible.

"The more people, the better," Zombie told Rolling Stone recently. "Festivals � especially in Europe � they're just monstrously gigantic, and it's fun. It's a cool way to spend the summer because I don't see people much, as far as other musicians that I'm friends with, except in a festival scenario. I don't ever leave the house. It's a way to catch up with people."

Asked if he's planning a big production for Mayhem, Rob say, "Yeah, we have a massive production. One time about seven years ago I did Ozzfest with no production, just for the hell of it. But I love a big production. This is a huge, huge show for the summer. We've been working on it for a long time."