Here’s a Kauai Local Secret:
Exploring the North Shore of Kauai can be quite an adventure. One of my favorite secrets to share with visitors is the Blue Room.   This is a great option if you are looking for an easy but great activity.  As you drive towards the end of the Kuhio Highway (going north) the road starts to seem thinner as the jungle encroaches more and more over the pavement. On the left side of the road you will notice people exploring some caves, most of which are visible from the road. If you come to the part of the road where the stream flows over the street: then you have gone too far. There is a tiny trail in that if you travel only about 30 yards up you will find a little cave that is full of water. If you muster the bravery to endure the chilly water you can swim to the right and find a little room that once inside makes the water around you seem bright blue. If you listen carefully you can hear the sound of the water level slowly rising and falling against other tiny rooms in the cave.