Note: You can cut out the some of the smaller roads/training area and take the main roads also, which is still a great ride. Continue on L169 past where my route turns at Niederalben, left on L373, left onto ramp for 270 where you will see signs for Idar-Oberstein. Ride safe.
I have not rode this route yet, just made it to try it out. I'm going to use caution as some of this maybe TRAINING AREA ROADS. Which are not blocked but closed to civilian vehicles...range control will pull you over. Once I check out the route I will update this.