Mountain Tubing in Kauai is one of the most unique and exhilarating experiences in all of Hawaii! This adventures offers a guided tubing tour through historic irrigation canals and tunnels built in the 1870s. Set on private plantation land near Mount Waiʻaleʻale, the 3-hour adventure includes a scenic 4x4 ride, gentle tubing, and ends with a picnic and optional swim in a natural pool.