Viewpoints of geologic and scenic interest along Wailuku River. Boiling Pots is a succession of big pools connected by underground flow or cascades and whose waters roll and bubble as if boiling. The exposed hexagonal columns that line the pools were formed by the slow cooling of basalt lava. The 80-foot Rainbow Falls is renowned for the rainbow formed from its mist many mornings. Legends say that the cave beneath the waterfall was the home of Hina, mother of the demigod Maui.
beautiful falls,go off trail and you'll find a spot were you can go swimming,water had deep spot as well as many sallow spot.if you do go off trail there's another wonderful water full behind but you have to cross the water and climb the rock to see it.a vine area some locals were swinging off of to the water.
Melissa T. on Rainbow Falls Trail
Rainbow Falls is a easy trail, you can park (free) and walk up straight to see the waterfall. After, a few pictures you can walk up the stairs to get a view from the top of the fall. Walk around the top and continue on down if you'd like. A must see!