Complex sentence: Snow Stormers is a "mat slide" consisting of three flumes (350 feet long) between Downhill Double Dipper and Toboggan Racers on Mount Gushmore.
Split into simpler sentences: Snow Stormers is a "mat slide" consisting of three flumes that are feet long. This attraction sits between Downhill Double Dipper and Toboggan Racers on Mount Gushmore.