Drift up Kauai's only navigable river to the ethereal Fern Grotto, a lava-rock amphitheatre draped in hanging ferns where water cascades from every surface. This sacred site has enchanted visitors for over a century.
What to expect
A flat-bottomed riverboat departs the Wailua Marina and glides up the jungle-lined river beneath a canopy of tropical trees and soaring white egrets. At the Fern Grotto, guests disembark and walk a short trail into the lava amphitheatre, where the ceiling drips with maidenhair ferns and the air is cool and misty year-round. The guide shares the legends of the Wailua River's seven sacred heiau (temples) and the ancient rites performed here. The return journey includes a traditional Hawaiian hula and chant performance on board.
Good to know
The Wailua Marina is approximately 30–35 minutes from Port Allen. Tour duration is around 2.5–3 hours, leaving time to combine with another excursion. Book via lealeatours.com to ensure cruise-timed return.
Sail there
Luxury cruises that call at Port Allen (Nawiliwili) — book through us, the fare is identical and your concierge stays on your side.