Summer is just about over, but Riot Fest brought the heat (and a bit of mud) for three jam-packed days of music and moshing.

From perennial faves like The Flaming Lips, to recently reunited OGs Bikini Kill, and “farewell, Chicago” sets from Slayer and The B-52s, Riot Fest brought an eclectic mix of acts to Douglas Park to celebrate the festival’s 15th anniversary.

Photographer Heather Kaplan was on site to capture the best of the fest—the macho men, the riot grrrls, and everyone in between. Slip on your Vans and throw up the Wu, it’s time to relive all the fun in our comprehensive photo gallery.

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