The Waimea Canyon, Wailua River & Fern Grotto Tour is a favorite for those wanting a mix of spectacular vistas and peaceful waterways. The day begins with the “Grand Canyon of the Pacific,” Waimea Canyon, offering sweeping cliffside views, deep valleys, and geological insight. Then, you’ll board a river boat along the Wailua River to reach Fern Grotto, a fern-covered lava cave that resonates with gentle breezes and tropical plants. Along the route, your guide shares cultural stories, historical context, and botanical information that ties Kauaʻi’s landscapes to its heritage.