Take an eco-adventure Kayak/Hike with Alii Kayaks and see a Secret Waterfall! Your Kayak Adventure starts with a leisure 2 mile paddle upstream through the scenic valley of the Wailua River. After securing your kayaks on the shores of the North Fork, your moderate to strenuous 1.5 mile hike begins. Wade through multiple streams, a lush rainforest and traverse over muddy trails all the while learning about local flora and fauna from one of our friendly and knowledgeable guides. Your hiking trek concludes with the beautiful 120' Uluwehi Falls, a.k.a. Secret Falls. A definite rock solid adventure!