Marble Productions & Silverwood Theme Park in North Idaho present this event which means along with a great import and compact car, SUV, truck show, neon competition, db drags, DJ’s and model search you’ll enjoy the Northwest’s largest theme park with over 60 rides, shows and attractions. Try the new 140 foot drop tower, Panic Plunge, or Velocity Peak, the high speed waterslides in Boulder Beach, a 12 acre water park. Blast through four underground tunnels on Tremors Roller Coaster, and get soaked on Thunder Canyon.