Akaka Falls is the best known waterfall on the Big Island of Hawaii. Akaka Falls is a 442 foot tall waterfall that plunges down into a deep gorge. When you enter Akaka Falls State Park there is a circular trail through a tropical setting that will give you views of Akaka falls, streams, and also Kahuna Falls. One good thing to note is that you will want to go through the from the right as you enter. The right side of the trail is steeper and has a lot of stairs. If you are not able to make the full hike, you can go to the left and see Akaka Falls and then turn around and come back the same way. Kahuna Falls is really just a smaller version of Akaka Falls so you would not be missing much.