Welcome to Bloodstock Open Air Festival, a metal pilgrimage where the earth trembles under the might of heavy guitars and the air is charged with the energy of thousands of headbangers. A photo reportage from this year’s edition by Marilena Vlachopoulou of the thunderous performances of metal legends like Abbath, Gatecreeper, In Flames, Knocked Loose, Meshuggah, Pest Control, Sepultura,  and more, as they converged on the hallowed stages to create a sonic storm like no other.