Slipknot have announced the date and ticket information for their curated music festival, Knotfest, which is heading to Brasil for the first time next year.Earlier this month the metal legends posted a video teasing South American stops of their festival, with Chile, Colombia, and Brasil all listed.Now, the band have confirmed they’ll top the bill at Sambódromo do Anhembi in São Paulo on December 19, 2021.