It is a more demanding walk (for good walkers), than from the refuge following path no. 4 up to crossing Colle Croce 2801 m. After a short descent to Lago Verde, 2723 m, the ascent continues along the entire long detrital strip that extends to the base of the ridge between the Grand Tournalin and the Roisetta. If you wish, you can avoid going down to the Green Lake, there is a path that allows you to stay at high altitude without going down.
Thus you reach an altitude of 3200 m, where the crest is incised by a steep but short funnel-shaped gully; go up it, to exit on the southern slope where in 5 minutes you will reach the foresummit 3324m. You walk along the tracks of the snowfield and via a short rocky ridge you reach the northern summit and the highest point.
At the top of Roisetta.
View of Valtournenche from the top of Roisetta, with the first light on the Matterhorn.
The Monterosa massif seen from Roisetta.