North of Kapa'a on Kauai just before Anahola Beach. This walking path is 5 miles long and will eventually be twice that long. Photo Finish - Hawaii, mystery, and trouble in paradise that never looked so good - http://terryambrose.com/photo-finish/
On the south side of Kauai, there's a small harbor and just to the left of the harbor is this spot where the waves crash in over the lava rocks. On the day we were here, the trades were blowing at about mph and it was a perfect day in paradise.