Kahuna Falls is a 100-foot, free-falling waterfall inside 'Akaka Falls State Park on the Big Island of Hawaii. While the waterfall is well-known, it is not well-documented and often overshadowed by the park's more visible 'Akaka Falls. Even a quick Google search will turn up photos of the wrong waterfall. However, if you're in the park, it's worth looking for this waterfall if not simply to say that you saw it!
Assuming you've already accessed the entire state of Hawaii (that's the hard part), accessing a view of Kahuna Falls just requires peering through dense vegetation along a short 0.4-mile loop trail. You may not see much of it, but it's there!
Google Location: 'Akaka Falls State Park, Hawaii 96728
GPS Location: 19.8564° N, 155.1528° W
Parking: Lot
Total Hike: 0.4-mile loop
Wheelchair Accessible: No
Admission: $5 per person for entry + $10 per vehicle for parking (free for Hawaii residents)
Open: 8:30am - 5pm
Swimming: No
Pets: No
GPS Location: 19.8564° N, 155.1528° W
Parking: Lot
Total Hike: 0.4-mile loop
Wheelchair Accessible: No
Admission: $5 per person for entry + $10 per vehicle for parking (free for Hawaii residents)
Open: 8:30am - 5pm
Swimming: No
Pets: No