This was at the end of our Road to Hana trip. We hiked The Pipiwai Trail, above Seven Sacred Pools. You walk through an amazing bamboo forest and Guava trees (I stubbed my toe looking up for them and it was worth it). The path ends at Waimoku Falls, a 400 foot waterfall. There's a pool underneath that you can swim in but they warn against because boulders fall from the top without warning. Chris swam, I didn't. We did have a nice picnic though of beer and sausage.