You step off the garden path and the rainforest swallows the last highway noise. Ferns brush your shins, and the air smells like wet basalt and wild ginger; somewhere above, water finds its rhythm and dares you closer. Guides clip harnesses with quiet precision, check your knot, and point to a ribbon of water peeling over green rock — the first rappel is 40 feet, the second can reach 115 when the valley is calm. This is Rappel Maui: a three-hour, guide-led descent into a private canyon on the Road to Hana where waterfalls and jungle cliffs set the agenda.