SLIPKNOT will headline the Knotfest Iowa festival, set to take place on September 21 at Waterworks Park in Des Moines. Also scheduled to appear on the bill are Till Lindemann (RAMMSTEIN), KNOCKED LOOSE, HATEBREED, POISON THE WELL, GWAR, VENDED, DYING WISH, ZULU, TWIN TEMPLE, HOLY WARS, SWOLLEN TEETH…
