Looking at maps later, I saw that the trail we followed down the gulch eventually comes back to USFS 081 at a point about 3.5 miles from Route 6, called Trail Hollow. Might be a good place to start if it is not private property.
Soldier Summit, Utah Horse Trails, Horse Trails
Utah, United States
time : Jul 17, 2018 11:09 AM
duration : 3h 11m 57s
distance : 6.1 mi
total_ascent : 1198 ft
highest_point : 8690 ft
avg_speed : 1.9 mi/h
user_id : Westerntrailrider
user_firstname : Tony
user_lastname : Henrie
This was a ride on an unnamed trail going down and bushwhacking on the return. It was a pleasant ride with nice views. Our return route included a steep climb up a hillside, a little brush busting through aspen thickets and crossing some areas of heavy blowdowns and deadfalls. It was good trail training for both horses and riders.
Access is from Route 6, just east of the Soldier Summit service station. Turn east on USFS 131. About 1/2 mile along, fork right on USFS 081. Then on about 7 miles to USFS 047, right at the apex of a sharp turn that makes a long southerly elbow in the road.
The trailhead where we started is unmarked and there are no facilities. A short distance from where we started, however, we found log corrals, located right on USFS 047 in a nice area for primitive camping. Easy access for any size trailer, with room to turn around. However the road getting there is several miles of very narrow dirt road: slow going.