The fan scene of Riot Fest 2013

1 of 56
The first annual Riot Fest Denver at May Farms in Byers, Colorado,featured a slew of classic acts on its first day, including Alkaline Trio, AFI, Guided By Voices, Superchunk, Against Me!, Iggy and the Stooges and the Replacements. There were other attractions too, though, from a carnival to a lucha libre ring. All photos by Eric Gruneisen.

Read our picks for Riot Fest's best moments.