Beautiful trip, but with strong Radler-, hikers and bus. Ideal on the weekday and at off-peak times. Until the insert above the Formarinalpe everything tarred. Then drive on simple gravel roads to the Freiburger hut.
Up to halfway there is the same feeder road as to Spullersee ... then separates somewhere in the forestATTENTION: the blue buses run here like the wild ones according to the timetable ... so better drive to the side and wait