Both MASTODON and MACHINE HEAD are taking part in this summer's Rockstar Energy Drink Mayhem Festival, which runs June 29th to August 4th and is headlined by ROB ZOMBIE.

However, the two bands will team up for an off-date show July 25th in Cleveland, OH at The House Of Blues. Tickets go on sale April 26th at 10am.

The complete Rockstar Energy Drink Mayhem Festival routing is as follows:

June

29 - San Bernardino, CA - San Manuel Amphitheater
30 - Mountain View, CA - Shoreline Amphitheatre

July

2 - Boise, ID - Idaho Center Amphitheatre
3 - Auburn, WA - White River Amphitheater
5 - Phoenix, AZ - Desert Sky Pavilion
6 - Albuquerque, NM - Isleta Amphitheatre
7 - Denver, CO - Fiddler’s Green Amphitheatre
10 - Toronto, ON - Molson Canadian Amphitheatre
12 - Burgettstown, PA - First Niagara Pavilion
13 - Scranton, PA - Toyota Pavilion at Montage Mountain
14 - Darien Center, NY - Darien Lake PAC
16 - Mansfield, MA - Comcast Center
17 - Bangor, ME - Bangor Waterfront
19 - Camden, NJ - Susquehanna Bank Center
20 - Saratoga Springs, NY - SPAC
21 - Hartford, CT - The Comcast Theatre
23 - Holmdel, NJ - PNC Bank Arts Center
24 - Bristow, VA - Jiffy Lube Live
26 - Noblesville, IN - Klipsch Music Center
27 - Tinley Park, IL - First Midwest Bank Amphitheatre
28 - Clarkston, MI - DTE Energy Music Theatre
30 - Atlanta, GA - Aaron’s Amphitheatre at Lakewood
31 - Tampa, FL - Live Nation Amphitheatre at the Florida State Fairgrounds

August

2 - Austin, TX - Austin360 Amphitheater
3 - The Woodlands, TX - Cynthia Woods Mitchell Pavilion
4 - Dallas, TX - Gexa Energy Pavilion