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Organizers of this year's Mayhem Fest made fans work hard for their chance to see Anthrax or any other band on the second stage: Narrow doorways, closed gates and rows of tents created a human traffic jam that tested the patience of everyone making their way to the Jägermeister stage set up on the corner of Greenwood Plaza Boulevard and Fiddler's Green Circle. Anthrax's mosh pit spanned from the street onto the sidewalk, placing the curb directly in the center of the pit, threatening catastrophe for nearby ankles.

Anthrax made fans forget about the inconvenient floor plan with a show more energetic than you'd expect from a band that has been active for three decades. Frontman Joey Belladonna commanded the stage with the exuberance of a 25 year old despite being twice that age, and even though guitarist Scott Ian's famous beard has turned gray, he hasn't lost a step since 1981.

Younger fans who stayed for Anthrax after Asking Alexandria were increasingly fist pumping and headbanging, starting with "Caught in a Mosh" through "Antisocial" and "I am the Law." Belladonna asked the crowd how many of them were seeing Anthax for the first time, and half the fans raised their hands. Older fans were in disbelief that Anthrax wasn't actually opening on the main stage, an honor that went to the Devil Wears Prada instead. Anthrax did suffer a mishap in the middle of "Indians," but Ian told fans the band only stopped to compliment the audience for having so much fun.

Page down for some photos from Slayer's set.