The Tent Boulder Trail leaves left (west) from the Mineral Site Trail 0.7 miles from the Mineral Site trailhead. It immediately beings climbing and the climbs get harder as you get higher. Initially in open forest, the trail gets rooty, rocky and technical as it approaches the massive Tent Boulder which also marks the end of the climbing. Past the boulder, the trail drops in a series of several long switchbacks, some with banked turns and rock features. It's fun to let it open here and it's only better below.
There are no big climbs or descents below the switchbacks and the trail has mellow moments. The excitement comes in drainage and stream crossings some of which are extremely steep and rough. Extensive trail work has made riding these areas reasonable although there's still plenty of spice and some of the streams may need to be walked in high water.
The trail surface becomes rough and rocky again as it descends to Forest Road 379. It's a great finish to a great trail.
This trail also rides well in the other direction (North to South) although a couple of the steep drops may need to be walked.