There are actually numerous hiking options you can take when visiting the Keahua Arboretum, the furthest inland you can drive on this side of the island. Just past the arboretum, the Powerline Trail is aptly named as it follows the transmission lines that carry electricity from the power plant in the south shore to the communities on the north shore. Bringing you about halfway up the side of Mount Waialeale, you will enjoy incredible vistas usually reserved for those willing to fork over big bucks to take a helicopter tour. This trail is used extensively by wild pig hunters: casual hikers are advised to wear bright-colored clothing as a safety precaution. CAUTION: It is almost ALWAYS a bit damp once you pass the somewhat paved road that technically ends at the arboretum parking lot. The unpaved road continues but SHOULD NOT be used if you have a basic, economy car rental. In fact, some car rental agencies will explicitly state that it is against their contract to bring your car off the paved roads.
HOW TO GET THERE: From Wailua, take Kuamo’o Road (Route 580) inland through the Wailua Homesteads residential area and past the University of Hawaii / USDA Agricultural Experiment Station. Another 2 miles through what locals call "Loop Road" eventually leads you to the Keahua Arboretum, with conspicuously situated parking areas. To get to the Power Line Trail, WALK further up the road from the parking area about 100 yards. The trail entrance is clearly marked on the right-hand side at the top of the hill. CAUTION: The east side is the rainy side of the island and the trail here is often muddy and treacherous for those unprepared. If you’re not sure, don’t take any chance. You can absorb all the nature Kauai’s forests have to offer simply by taking a peaceful stroll through the arboretum.