SplashZone, Rolla's outdoor waterpark, is a great place to spend summer time fun with family and friends. SplashZone offers an interactive play feature great for the smaller kids, two water slides, lazy river, innertube rental, large umbrellas covering tables, “Worlds Largest” vortex, beach-like entry, sand play area, concession stand, birthday party package, private pool rentals, and swimming lessons.