Snow in winter.
The beginning of this trail is located a few hundred yards before Horton Trailhead. It starts right off the main road to the east across form a parking lot. Climb up about 1,000' until you hit the Highline Trail #31 (NRT)
and turn around and ride the downhill you earned back down. The trail is rough and rocky near the top but all rideable. The bottom half is much smoother. The trail is fun overall if you like a rough downhill.