perhaps our experience was not as nice as some other reviewers here due to weather. We went on a day where it had been drizzling on and off for a couple of days. It was very muddy and slippery and the mosquitoes were out to feast! didnt enjoy the views too much as we were too worried about slipping in the mud. The small waterfall was very anticlimactic. we ruined a few good tennis shoes and white clothing. Luckily I wore crocs and these seemed to be the perfect shoes! I was able to rinse the mud off. There is a water hose at the bottom of the trail. very shady path so no need for hats or shades. my umbrella came in handy when it sprinkled. the walk can get very steep at times. as we went up, there were quite a few who came down giving up on the hike before seeing the waterfall. $5 parking fee.
if you're short on time with your stay in HI, this one you can skip.