Secret Falls, Kauai. Kayaked up the Wailua River then hiked thru the jungle to Secret Falls. The water was so cold but it was an amazing experience. 1st time swimming beneath a waterfall & walking behind it. Incredible sensation. Was surprised that of all the times my husband went to Hawaii, he'd never done anything like it. He rarely explored the island like that. What a shame! There's so more to see than the beaches! We're looking forward to moving to Hawaii soon to start a family!