Slipknot is set to head-line the 2012 Mayhem Festival with metal heavyweights Slayer playing the second slot and a to-be-announced big name act filling the third slot, which won't be officially announced until March 5th, speculation indicates it will be Motorhead.

The second stage will be feature Anthrax, The Devil Wears Prada, Asking Alexandria, As I Lay Dying, and Whitechapel when the 26-date North American tour kicks off on June 30th in San Bernardino, Ca.

6/30 - San Bernardino, CA San Manuel Amphitheater
7/1 - San Francisco, CA Shoreline Amphitheater
7/3 - Seattle, WA White River Amphitheater
7/4 - Boise, ID Idaho Center Amphitheater
7/6 - Phoenix, AZ Ashley Furniture Home Store Pavilion
7/7 - Albuquerque, NM Hard Rock Casino Albuquerque Presents The Pavilion
7/8 - Denver, CO Comfort Dental Amphitheatre
7/10 - Dallas, TX Gexa Energy Pavilion
7/11 - Houston, TX Cynthia Woods Mitchell Pavilion
7/13 - Tampa, FL 1-800-Ask-Gary Amphitheatre
7/14 - Atlanta, GA Aaron's Amphitheatre at Lakewood
7/15 - Indianapolis, IN Klipsch Music Center
7/18 - Oklahoma City, OK Zoo Amphitheatre
7/20 - St. Louis, MO Verizon Wireless Amphitheater
7/21 - Chicago, IL First Midwest Bank Amphitheatre
7/22 - Detroit, MI DTE Energy Music Theatre
7/24 - Cincinnati, OH Riverbend Music Center
7/25 - Cleveland, OH Blossom Music Center
7/27 - Philadelphia, PA Susquehanna Bank Center
7/28 - Pittsburgh, PA First Niagara Pavilion
7/29 - Washington, DC Jiffy Lube Live
7/31 - Saratoga Springs, NY Saratoga Performing Arts Center
8/1 - Buffalo, NY Darien Lake PAC
8/3 - Boston, MA Comcast Center
8/4 - Scranton, PA Toyota Pavilion
8/5 - Hartford, CT The Comcast Theatre