The Gastlosen are without any doubt amongst the most beautiful places in Europe, and can be climbed on routes that are strewn with every level of difficulty.
Limestone mountain chain, the Gastlosen, home of the Fribourg's climbers, offers many climbings options. The north face has more difficult climbing routes. The south face is less steep and easier. The south face is also open earler in the season due to the heat.
Taken from "guides-passemontagne.ch".
A guide with detailed climbing routes is on sale at the Jaun tourist office, the Chalet du soldat and at the tea-room "Les Arcades".