The Reef Indoor Water Park is located inside The Big Horn Resort in Billings. Come speed down the Barracuda Blaster or The Tropical Twister which are three stories high! Afterward, take a refreshing dip in the wave pool. Our patio for sun lovers is open all summer long. We also have a cafe and just added healthier menu items. The Big Horn Lounge has visibility to the water park where the non-swimming adults can relax and watch a favorite game on one of four big screen televisions. Visit us at TheBigHornResort.com