This sector is situated in the valley into which the sector Paretone faces. Bocca di Rosa houses a good number of very varied routes, which from low angled slabs, over cracks and dihedrals go all the way to overhangs. Here one finds climbing styles, which are quite unusual for Toirano where climbing along technical walls is predominant. For the super strong the Grotta positioned in the sector Alto offers powerful stamina routes in an overhang. The first 8 of the valley was climbed here by Guido Cortese, who is the “liberatore” of all the hard routes of Toirano.