L'Effet Dièdre

L'Effet Dièdre is a demanding bouldering route located in the J.A. Martin area, graded as a "FB5+". This challenging problem features a traverse and utilizes underclings, adding complexity to the climb. Positioned as the 27th route on the Red circuit, L'Effet Dièdre is one of the two routes situated on the boulder named Manettes. The topo image provides a visual guide, outlining the general climbing direction for those attempting this exhilarating route.