The Yellow Trail is singletrack along most of its length.
It starts at Wallace Dam Road just across the from Blue Trail
and together with the Green Trail
it makes a nice beginner loop at Rock Hawk.
Just after Wallace Dam road, you'll pass by an old homestead - but spoiler alert, there isn't much to see. After about a half mile, you'll come to an intersection and have to take a sharp right to stay on the Yellow Trail. (Right takes you right out to the main park road, Lawrence Shoals Road).
This begins your journey north towards the lake. This section features easy contoured riding along the lake as you head out into one of the peninsulas that juts into the lake, You'll have a good view of the dam if you like that sort of thing.
Then you've got to climb back out. Look for entrance to the advanced narrow singletrack Hawk's Head
at the top of this climb. The Yellow Trail ends near the main park road. The advanced The Talon
trail connects here, or you can access the Orange Trail
across the paved road.
The yellow trail is well marked with clearly numbered trail intersections. There are a couple of cautionary signs denoting "steep hills", but probably anyone who's ridden north of I-20 won't find them particularly steep. There are also quite a lot of signs along the route that introduce the local wildlife you might expect to see.