Knotfest Mexico 2015 seemed to be a supermassive deal, and Slipknot isn't just letting those good times fade away. Instead, the band will be releasing its documentary called Day Of The Gusano (Spanish for maggot) to theaters on September 6, and you can check out two trailers for the documentary below.
There's not a ton of information floating around online right now, but you can glean what else you'd need to know via the documentary's website here.
