
Rainbow Falls: detailed info on hiking to Rainbow Falls Trail in the Great Smoky Mountains. Trail descriptions, key features, pictures, maps and elevation Trail Location : Roaring Fork Motor Nature Trail. Rainbow (Waiānuenue) Falls is a waterfall located in Hilo, Hawaii. It is 80 ft (24 m) tall and almost ft (30 m) in diameter. The falls are part of the Hawai'i State Location : Hilo , Hawaiʻi , United States. Just west of Downtown Hilo, Wailuku River State Park is home to the foot Waianuene (Rainbow Falls) and Peepee Falls which feeds the beautiful pools.