Caution (August 2025) : the loose ledge in the middle of the traverse has been strengthened with a piece of wood and one should verify the solidity of the system before trying this problem.
Long traverse along the blue path. Sitstart left at the entrance of the tunnel next to the character "H", low traverse with crimps (without using the big ledge in the first part) and exit in Les Usurpateurs, slightly before a characteristic roof.