Austin, Texas.
Old Spicewood Springs Road, turn off 360 onto Old Spicewood, go down about 4 miles two trails up on your right, both have steep incline entrances.
Near the intersection of parmer and 620, go down Parmer away from 620, look to your right for a hole between the concrete guard on the side of the road, it goes down to a power transformer area and some sweet offroad trails, this is all located behind some soccer fields.