From the Intermediate Loop
I, you can either continue to the Pine Plantation Loop
or hang a right to this loop. This will add some mileage out of the way, but will return you to roughly where you left the main trail.
At the entrance of this trail is a rooty section that leads to a technical feature consisting of wide, cut logs set on end to form an elevated skinny. Many of the logs are starting to deteriorate in the middle, so I didn't attempt.
What makes this trail more challenging than the rest is that it's narrower, tighter, and has more grade reversals. The climbs are steep and punchy. The trail is also the least traveled of the trail system, some parts are a little overgrown.
Keep your eye out for optional log piles on the sides. I realized they were rideable as I pedaled by. This trail made me wish I lived nearby. I could see myself progressing on this trail on the technical features and improving my speed/time.