In summer 2016 I went on an expedition to realize the lowest Highlines in the World. The goal was to climb into the Gouffre Berger, a world renowned cave and set up a 85m long Highline at a depth of 500m in the Salle des Treize. Of course the biggest challenges were the cave itself and also the weather... But see yourself and make sure to watch this beautiful documentary.
The movie is by Valentin Rapp and was produced for PETZL Germany. A big thanks goes out to the crew of Sangle Dessus-Dessous without which we would not have been able to do it!