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Erebus, located at 18 S. Perry in Pontiac, features four stories of walk-through horrors in a a converted old city parking ramp (how creepy is that?) Creators from Michigan's legendary Haunt spook house, put together this megalith of terror. Zombies, creatures, demons and spooks will scare you silly from beginning to end. Don't waste time checking the website to see what's there--you have to see this haunted house to believe it. Don't miss world's largest haunted house! Michigan Halloween spook house fun - Grand Rapids Holidays | Examiner.com