July 8 2011 - The third Sonisphere music festival officially kicked off in Knebworth today. Fans were treated by performances from "The Big 4" Anthrax, Megadeth, Slayer and Metallica.
It marked the first time they had played together in the United Kingdom. Other performance's include Japanese Voyeurs who opened the Bohemia Stage.
You can see photos from the day one of the festival below and more on Gigwise over the weekend.
For more information about Sonisphere and all this year's summer festivals, check out the Gigwise Festival Guide.
You can keep up to date with all the latest news from Gigwise by following us on Twitter and liking us on Facebook.
Previous
Next
Bestival Festival 2011: The 25 Must-See Acts 
Electric Picnic Festival 2011: Best Bits In Photos With Arcade Fire And More
Reading Festival 2011: Best Bits In Photos.jpg)
Leeds Festival 2011: Best Bits In Photos
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
Foo Fighters' Dave Grohl To Muse's Matt Bellamy: The Best Guitarist Sex Faces
GQ Men Of The Year Awards 2011: Photos With U2, Tinie Tempah And More
