Sonisphere have just added ten more bands to the line-up of this year's festival including K! Tour alumni Four Year Strong.
The full list of new additions is as follows:
Black Dahlia Murder, Black Tide, Firewind, Four Year Strong, The Mars Volta, Opeth, Killing Joke, Rise To Remain, Six Hour Sundown, Watain.
As previously announced, Metallica will close the Friday night of this year's festival (July 8), Biffy Clyro will close the Saturday night (July 9) and Slipknot will close the Sunday night (July 10).
Tickets for Sonisphere are on sale now from www.aloud.com.