The Big 4: More Backstage Footage From Sofia 2010 Posted Online

6Strings7Sins has posted backstage footage of the The Big Four - Metallica, Slayer, Megadeth and Anthrax - at Vasil Levski Stadium in Sofia, Bulgaria from June 22nd, 2010, marking the first time these '80s thrash legends shared a stage together (featured on the The Big Four: Live From Sofia, Bulgaria DVD and Blu-ray). Check out the footage below: