Le Mûr par Fermentation

Le Mûr par Fermentation is a challenging bouldering route located in the Ussy area. Rated FB7a+, this traverse route is an alternative to the 33rd route of the Red circuit and is part of the collection of 12 routes on the Effraction boulder. The climb follows a specific climbing direction as depicted in the topo image, offering climbers a demanding and rewarding bouldering experience.