Scion Rock Fest

The lineup for the sixth annual Scion Rock Fest has been unveiled. Among the 25 plus bands playing are headliners Machine Head and High on Fire along with Red Fang and Crowbar. The free event will be held at multiple venues in Pomona, Calif. on May 17.

The Melvins and Municipal Waste are among the acts booking their tickets to Memphis in June to take part in the 2013 Scion Rock Fest. Though the full lineup has yet to be revealed, the Scion AV blog has unveiled a wealth of the bands taking part in this year's event.

The 2012 Scion Rock Fest is set to hit Tampa, Fla., and its free to the public. This year’s spectacle takes place on June 2, just in time for the summer swelter. Down and Sleep are set to headline the event, where 26 metal bands will perform at four different venues throughout the course of the day. The city of Tampa will never, ever be the same.