A full-day tour but very enjoyable. Justin was our tour guide, and he did a fabulous job. Enthusiastic, knowledgeable, and funny. Visited several waterfalls, scenic overlooks, a black sand beach, and several other stops along the way (for banana bread, ice cream, etc.). Amazing views and geography. Windy roads (as advertised), so bring some bonine or dramamine if you get motion sickness. Tour picked us up and dropped us off at the resort, which was really nice. They use a 10-12 person passenger van that has plenty of space. Didn't feel crowded at all. They gave us breakfast sandwiches, served us lunch, and had plenty of water along the way. Bring your suit and towel, as you can swim in the pool below a waterfall!