This adventure 22,000-acre state park reservoir rivals Utah’s two largest state parks; Wasatch Mountain and Antelope Island. We offer recreation opportunities for nearly every visitor from boaters to bikers, from fishing to camping and ATV riders to equestrians. Sand mountain provides 18,000 acres of beautifully crafted dunes and hundreds of miles of UTV riding trails. The red sand is an incredible backdrop for Sand Hollow reservoir. Located in Hurricane City and St George, Utah.