The place for crazy family fun! Avalanche Bay is the largest indoor waterpark in Michigan offering huge amounts of water fun for every age. Centrally located at the heart of Boyne Mountain Resort, this wet and wild waterpark is always 84 degrees and open all year 'round, making it the perfect vacation destination or fun day trip. Avalanche Bay features six exciting water slides, including the park's newest thrill, The Big Couloir - a ProSlide SuperLOOP with the steepest drop in the industry, as well as a Rip Zone surf simulator, Splasherhorn Mountain interactive play structure, lazy river, children's pool, relaxing hot tubs, and many other unique waterpark attractions. Avalanche Bay Indoor Waterpark also offers an arcade with over 50 of the coolest games and a redemption counter providing awesome prizes. Working up an appetite is easy to do at Avalanche Bay, and you don't have to travel far to fuel up for more aquatic fun. Grab a quick bite at the Snack Shack or fill up with a full menu at the Apres Ski Pub, both located inside the park. Avalanche Bay does birthday parties too!