Route: Trail follows the Waihou Springs State Forest Reserve tree plantation road. After making a loop around the upper section, the trail descends southward into the Kailua Gulch below. Monterey cypress and eucalyptus trees can be seen, as well as the native tree species `ala`a, halapepe, and koa. The boulder-strewn gulch bottom marks the end of the trail. Looking up from the gulch, hikers can see a series of small water-diversion tunnels cut into the side of the rock face 30` above.

Directions: Access trail at the Waihou Springs State Forest Reserve gate, about 0.25 miles above the Olinda Endangered Species Propagation Facility on Olinda Road. Parking is available on Olinda Road outside the Forest Reserve gate. Area open from sunrise to sunset only.

Do not use any trail or access road that is not delineated by name and color and that may also be displayed on these maps. The marked features are managed for public recreational use. Other trails or roads that branch off from the public features may be on private property, and are not managed for any public recreational use. Access is subject to adjacent landowner approval, and if used without authorization, you will be trespassing and possibly putting yourself at risk.