Diamond Head confirmed for Sonisphere with the Big Four for France Diamond Head have now been added as the opening act for the Big Four at Sonisphere for the date in France. The Festival takes place on 8th & 9th July 2011 at Snowhall Parc, Amneville, France. Once again, Diamond Head will be on the same stage at Anthrax, Megadeth, Slayer & Metallica, on Saturday 9th July, 2011 This will be only the second time Diamond Head have performed in France, the last being at Espace Balard 30th September 1983 supporting Black Sabbath. Click here to buy tickets Other bands on the Saturday include Volbeat & Papa Roach. Follow us on Facebook