This trail is actually part of the Blue Diamond system that is mostly on the north side of highway 160 and can be linked to from many trails in that area. Unlike the trails in Blue Diamond I found this one to have fairly good signage at the intersections. All singletrack with a slow steady climb leading to fun, technical downhills.
From the tunnel under highway continue straight through the first intersection and follow single track up an easy grade for the first 3 miles. Stay Left at the first two intersections and continue on up until you reach Badger Pass itself- great view and another intersection. Take a Right and climb up a short steep grade to get on top of the ridge. You are now heading North and a 1 mile technical downhill run followed by a right turn and a short climb. Take a Left and then another Left .3 mi later for a long downhill run to the highway. Go under the highway again through another tunnel and right towards the traihead.
This may sound confusing but its really not, this area is all open and very hard to get lost, especially if you have gotten a local map. Because this area is all exposed it is prone to extreme heat, please take lots of water and sunscreen.