Rock Fest, which bills itself as the largest rock and camping event in the US, will return to Cadott, Wisconsin from July 13-15. It brings with it a trio of headliners including Slipknot, Godsmack, and the Phil Anselmo/Rex Brown band calling itself Pantera. Also on the bill: Ice Cube, Papa Roach, Everclear, Gwar, Mushroomhead, Highly Suspect, and many more. Also, the festivities begin early for those who buy the full three-day pass, with a July 12 warmup show featuring Soul Asylum, Alien Ant Farm, and others. Ticket info is available here.