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Big Jim is a challenging bouldering route located in the Petit Bois area. Graded with a difficulty level of "FB6c," this route features a wall with pockets and a high climb. It is the 4th route of the Black circuit and is one of 7 routes on the Big Jim boulder. Climbers can refer to the topo image to understand the general climbing direction of this exhilarating problem.

"Le Meilleur des Mondes" is a challenging bouldering route located in the Bois Rond area. Graded as "FB6a," this problem is situated on a wall and is the 22nd route of the Red circuit. It is one of 9 routes found on the Nuages boulder. Climbers can refer to the topo image for a visual representation of the general climbing direction of this route.

This famous dyno is between a very good ledge and the top of the boulder, 2 meters and 60 centimeters between the two, nothing in between. The best beta is either starting with one foot on the ledge, either stomping it later in the move. It is a very particular and specific move and it can indeed be subjectively much easier than many other 8a's, for the few having the necessary body type and skills. For the average climber, however, it is simply impossible or damn hard. Apparently, one needs to have really fast and explosive legs, good dynamic balance and very good coordination (all things that make you good at dynos in general). Height is not strictly necessary, but it can help a lot. Many good, even very strong climbers won't be able to do it, and this is the reason for the 8a grade.