- Located on the northeastern side of the island, this 10.5 mile difficult trail first passes through mixed exotic forest, then native Koa/Ohia forest, and finally through former pasture, before rising 3,250` in elevation in 5.5 miles to reach the old Civilian Conservation Corps camp and Ranger station at Keanakolu. The trail is not well maintained and can be difficult to negotiate in wet weather. Catchment water is available at Keanakolu, but purify before drinking. Area is open to year-round game mammal hunting. Wear bright colored clothing.
A partially paved, four wheel drive road leads mauka from Highway 11 at the 30 mile post in Ookala. Follow road 2.7 miles to the Hilo Forest Reserve boundary and Humuula Trail.