**Massanutten's Indoor WaterPark is open year-round and is always 84° fahrenheit!** Massanutten Waterpark has both an indoor and outdoor features. Here a few: Massanutten Meltdown This central feature of the Indoor WaterPark has a bit of everything - from water cannons to water falls, and don't forget the giant tipping bucket! The Pipeline Surfing in the Shenandoah Valley? Massanutten WaterPark has its own FlowRider®. Christened "The Pipeline," it is the first and biggest FlowRider® in Virginia! Tube Slides Whether you are riding alone or with a friend the twists and turns will keep you guessing all the way to the bottom.