The Mars Volta have been added to the line-up for this year's Sonisphere festival.
The event, which runs from July 8-10, will mark the band's only UK performance in 2011.
Sonisphere will be headlined by Biffy Clyro, Slipknot and the Big Four - Metallica, Slayer, Megadeth and Anthrax.
Other new additions to the bill include Opeth, Killing Joke, Four Year Strong and Black Tide.
Tickets are on sale now. For more details and to buy Sonisphere festival tickets, check out Gigwise Gig Tickets.
For more information about Sonisphere and all next summer’s festivals, check out the Gigwise Festival Guide.
Soniphere festival - Best Bits
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.


Razorlight, Example, Ed Sheeran To Play Shakedown Festival 2011
Leeds Festival Weather Forecast Is For Sunshine And Showers, Met Office Says
Reading Festival Weather Forecast For 'Heavy Rain', Met Office Says
Sonisphere Festival 2012 Tickets On Sale On Wednesday (July 13)
Sonisphere Festival 2011: The Best Bits In Photos
Slipknot Lead Two Minute Silence For Paul Gray At Sonisphere Festival 2011
Sonisphere Festival 2011: Photos From Day Three
As Muse Prepare For Reading & Leeds: 20 Facts About 'Origin Of Symmetry'
Miley Cyrus, Britney Spears, Madonna: Worst Covers Of All Time
Reading And Leeds Festival: Most Memorable Moments Through The Years