- This 1.7 mile moderately difficult forested trail starts at Polipoli Springs State Park at a 6,200` elevation. The trail winds through stands of redwood and other conifers, past the Tie Trail junction and down to the old ranger`s cabin at 5,300`. At the trail`s end is the old Civilian Conservation Corps camp and a three-way junction, the beginning point for both the Plum Trail and the Boundary Trail. Several plum and other fruit trees can be found in this old camp area. Moreover, the Redwood, Plum, Haleakala Ridge and Polipoli Trails form a loop worth hiking (3.5 miles).