Pitchfork

Photo by Sung Kim

The more things change, eh? Mastodon may be kicking it with the Boss and recording their Blood Mountain follow-up with nü-metal production king Brendan O'Brien, but they'll reach into the past to rekindle their touring partnership with Slayer this fall.

Slayer and Mastodon previously joined forces on the first two installments of the "Unholy Alliance Tour", so it's only appropriate that their new dates together are being billed as the "Unholy Alliance Tour, Chapter III". Trivium will also play all dates on the tour.

For now, the "Unholy Alliance Tour, Chapter III" is a European affair, but more dates are still to be announced.

Both Mastodon and Slayer have shows apart this summer.

Slayer + Mastodon (and Trivium):

10-27 Manchester, England - Manchester Arena
10-28 Birmingham, England - NEC
10-30 London, England - Hammersmith Apollo
10-31 London, England - Hammersmith Apollo
11-02 Cardiff, Wales - CIA 7000
11-03 Glasgow, Scotland - SECC Hall 3
11-05 Offenbach, Germany - Stadthalle
11-06 Cologne, Germany - Palladium
11-09 Stuttgart, Germany - Schleyerhalle
11-10 Winterthur, Switzerland - Eishallel Deutweg
11-11 Paris, France - Zenith
11-16 Vienna, Austria - Gasometer
11-18 Munich, Germany - Zenith
11-19 Berlin, Germany - Columbia Halle

Mastodon:

07-09 Seattle, WA - White River Amphitheatre *
07-10 Portland, OR - Roseland
07-11 Sacramento, CA - Sleep Train Amphitheatre *
07-12 San Francisco, CA - Shoreline Amphitheatre *
07-13 San Bernardino, CA - Glen Helen Pavilion *
07-15 Fresno, CA - Save Mart Center *
07-16 San Diego, CA - Coors Amphitheatre *
07-17 Las Vegas, NV - House of Blues
07-18 Phoenix, AZ - Cricket Pavilion *
07-19 Albuquerque, NM - Journal Pavilion *
07-20 Denver, CO - Coors Amphitheatre *
07-22 Kansas City, KS - Verizon Wireless Amphitheatre *
07-23 St. Louis, MO - Verizon Wireless Amphitheatre *
07-25 Dallas, TX - Smirnoff Music Center *
07-26 San Antonio, TX - Verizon Amphitheatre *
07-27 Houston, TX - Sam Houston Race Track *
07-28 New Orleans, LA - House of Blues
07-29 Tampa, FL - Ford Amphitheatre *
07-30 Miami, FL - Sound Advice Amphitheatre *
08-01 Virginia Beach, VA - Verizon Amphitheatre *
08-02 Pittsburgh, PA - Post Gazette Pavilion *
08-03 Scranton, PA - Toyota Pavilion *
08-04 Poughkeepsie, NY - The Chance
08-05 Boston, MA - Tweeter Center *
08-06 Uniondale, NY - Nassau Coliseum *
08-08 Toronto, Ontario - Downsview Park *
08-09 Detroit, MI - DTE Energy Music Theatre *
08-10 Chicago, IL - First Midwest Bank Amphitheatre *
08-12 Atlanta, GA - Lakewood Amphitheatre *
08-13 Indianapolis, IN - Verizon Wireless Music Center *
08-15 Camden, NJ - Tweeter Center *
08-16 Hartford, CT - Dodge Music Center *
08-17 Washington, DC - Nissan Pavilion *
08-19 Buffalo, NY - Darien Lake Performing Arts Center *

* Rockstar Energy Drink Mayhem Tour

Slayer:

07-03 Arvika, Sweden - Arvika Festival
07-04 Werchter, Belgium - Rock Werchter
07-05 Bergum, Netherlands - Waldrock Festival
07-06 Roskilde, Denmark - Roskilde Festival
07-07 Kavarna, Bulgaria - Kaliakra Festival
07-09 Lisbon, Portugal - Super Bock Super Rock
07-11 Merida, Spain - La Plata
07-12 Zaragoza, Spain - Metalway Festival
11-29 Moscow, Russia - B1 Club