More bands have been added to the 2020 Full Terror Assault Open Air Festival. The event will take place at the Hogrock Campground in Cave-in-Rock, IL on September 9-12 and it will now feature: GWAR, Exodus, M.O.D., General Surgery, Homewrecker, War Curse, Ground, Shock Narcotic, Hidden Intent, Extinction A.D., Atoll, Duskwalker, Axeslasher, Nooses, Malformity, Pitlord,…