Slipknot have announced their return to the road for the 2021 Knotfest Roadshow, which will see them taking in shows across North America later this year.The 28-date run follows the band’s previously announced Knotfest Iowa hometown show in Des Moines on September 25, with the nu-metal icons set to be supported by Killswitch Engage, Fever 333 and Code Orange on the new run of dates.After kicking off at the end of September, the tour will eventually wrap up in Phoenix, Arizona on November