Slipknot have announced details of their upcoming one-day festival, Knotfest Iowa 2021.Set to take place at the National Balloon Classic Field in Indianola, IA on September 25, the long-running metal band will headline on the day.The likes of Faith No More, Megadeth and Lamb Of God will also perform at Knotfest Iowa 2021, while $uicide Boy$, Gojira, Trivium, Tech N9ne, Knocked Loose, Turnstile, Gatecreeper and Vended are all set to play.You can see the line-up poster for Slipknot’s Knotfest Iowa 2021 below.Tickets for Knotfest Iowa 2021 are available on pre-sale today (May 25) to Knotfest.com subscribers, with general sale set to begin at 10am CT on June 4.
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