In Flames and Parkway Drive also to play Knebworth bash
Motorhead, Mastodon and In Flames have all been added to the Sonisphere Festival line-up.
The three-day bash, which takes place from July 8-10 at Knebworth Park, will be headlined by Biffy Clyro, Metallica and Slipknot.
The show will be Motorhead‘s first at Sonisphere Festival, while Mastodon, who last played the UK in February 2010, will be making their second appearance at the event.
Australian hardcore band Parkway Drive have also been added to the bill. See Sonispherefestivals.com for more information.
The Sonisphere Festival line-up so far is:
To check the availability of Sonisphere Festival tickets and get all the latest listings, go to NME.COM/TICKETS now, or call 0871 230 1094.