The Best Geological history tours in Kapaʻa, Hawaii

Smith's Fern Grotto Tour is a popular tourist attraction and travel agency located at 3-5971 Kuhio Highway in Kapaʻa, Hawaii, United States. This family-owned business, started in 1946 by Walter Smith, Sr. and his wife Emily, continues to share the songs and legends of the Wailua River Valley with visitors. The two-mile river journey includes stories of ancient Hawaii, hula lessons, and stops at historical sites such as the King's Highway and sacred Mount Kapu. The Wailua River, known as the only navigable river in Hawaii, offers stunning views and a glimpse into the rich cultural heritage of Kauai. Guests can enjoy a short nature walk through the rainforest to the Fern Grotto, a geological wonder where ferns grow upside down from the roof. The tour lasts approximately one hour and 20 minutes round-trip, with scheduled tours available Monday through Friday.