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Known as Waiahuakua, this is the second longest sea cave in the world, stretching 1,155ft. It is known as the Sacred Water Cave and as the Double Door cave – as it has both an entrance and an exit. Kayak tours run through the cave to allow visitors a close-up view of the caverns huge length. A fissure in the roof of the volcanic rock allows water to gush into the amazing cavern.


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Mountain tubing adventure down the long irrigation ditches of an old sugar plantation in Kauai, Hawaii.

8 . This sport began to flourish in Hawaii around 2005, and has since become a global addiction. With the right equipment and guidance, first time paddlers can make strokes in minutes. Try the sport that has changed the way people surf, run white water, and explore interior waterways. Limited space due to small tour numbers. 1-800-380-KAUAI (5282) #ActivityKauai #Kauai #Hawaii #SUP