Sonic Temple Festival is coming back to Mapfre Stadium May 15-17 with a KILLER LINEUP! Metallica headlines (and plays both Friday and Sunday – 2 different sets!) In addition – check out the other bands on the bill: Slipknot, Bring me the Horizon, Evanescence, Staind, Cypress Hill, Deftones, The Pretty Reckless & SO MUCH MORE! Click HERE for the full lineup and to purchase tickets! Enter to WIN a pair of tickets below!