Park your car in the Schutzle car park down the paved forest road of the same name leading to Lautenbachzell. The GPS position of the start of car park is 47°55'24.20"N,7° 7'6.03"E. From the village centre, continue on Grand Rue towards Sengern to find the path that climbs steeply to Schutzle on the left (a sign indicates the direction of Gustiberg). Follow this road to the car park 3 km away. The paved road ends here (S).
Follow signs for Gustiberg. After a 90° turn to the right and crossing a stream, a small well-marked trail heads up steeply to the left (1). Take it to the Gustiberg colony, then on to the farmhouse (2). You then come to stubble and the forest road. Follow it to the Lac du Grand Ballon (well signposted) (3).
On the way back, return to the Gustiberg farmhouse and inn and continue on the forest road on the right, following the Blue Crosses. It goes down a bit at first and becomes flat after a fork that you pass on your left (at a picnic table) (4). Continue to the Kletterbach waterfall at the first rapids you come across (5).
One hundred metres before the waterfall (retrace your steps), a path starts on the left and winds down. Take this and head down to the forest road where you turn right to reach your starting point. Along the trail, you can see the lower waterfall.
Hope you enjoy this walk in Lautenbachzell.