For the past 40 years, Hawaii's sugarcane plantations have closed one by one. In the fall of 2009, Gay and Robinson announced the closure of Kauai's last plantation, leaving only one in Maui, the last in the state. The sugarcane irrigation ditches remain, striating these islands like spokes in a wheel. Inspired by the Hawaiian auwai, which diverted water from streams to taro fields, these engineering feats harnessed the rain. One ingenious tour company on Kauai has figured out a way to make exploring them an adventure: float inflatable tubes down the route.
Kauai Backcountry Adventures. Popular with all ages, this laid-back adventure can book up two weeks in advance in busy summer months. Here's how it works: you recline in an inner tube and float down fern-lined irrigation ditches that were built more than a century ago—the engineering is impressive—to divert water from Mt. Waialeale to sugar and pineapple fields around the island. They'll even give you a headlamp so you can see as you float through five covered tunnels. The scenery from the island's interior at the base of Mt. Waialeale on Lihue Plantation land is superb. Ages five and up are welcome. The tour takes about three hours and includes a picnic lunch and a swim in a swimming hole. You'll definitely want to pack water-friendly shoes (or rent some from the outfitter), sunscreen, a hat, bug repellent, and a beach towel. Tours cost $102 per person and are offered morning and afternoon, daily. 3-4131 Kuhio Hwy., across from gas station, Hanamaulu, HI, 96716. PHONE: 808/245-2506 or 888/270-0555. www.kauaibackcountry.com.