Wailua Falls is a 113-foot waterfall located near Lihue (Kauai, Hawaii) that feeds into the Wailua River. The waterfall is prominently featured on the opening credits of the television show Fantasy Island.
There are paths to the bottom of the falls, but it can be muddy, slippery and dangerous. The "trail" further from the parking lot is less steep than the closer one. Some hikers have strung ropes along the paths, but officials come by every so often and cut them. In ancient times, Hawaiian men would jump from the top of the falls to prove their manhood. And people still leap off, though it is dangerous and illegal. The pool is great swimming, but currents close to the waterfall are very dangerous. Sources