From the Lone Oak Trail, the trail crosses a creek. It's usually rideable with steep banks and a rooty section to get up the other side. This section of the trail is more singletrack so watch for poison oak along edges.
The trail widens to doubletrack once you're in the shaded canyon, and there's a short rocky climb followed by another section with exposed roots. It's a shady creek ride all the way to the junction with the Curran Trail. You'll hardly notice the roots and rocks in the downhill direction.