Testa Grigia

This is certainly the most challenging hike among those described, both in terms of length and the difficulties encountered.
For much of the route, a good trail is followed, but there are some rocky sections equipped with chains or metal cables. The final stretch to the summit must be tackled with great care, especially on the descent.
It is also possible to complete the hike over two days, staying at Bivacco Lateltin.
From the summit, the view of Monte Rosa is spectacular.

From the Pont-Saint-Martin motorway exit, turn right towards Turin. At the second roundabout, turn left following signs for Gressoney.
The road climbs for several hundred meters before turning right into the Lys Valley road, passing through the villages of Lillianes, Fontainemore, Issime, Gaby, and Gressoney-Saint-Jean, until reaching the main village of Gressoney-La-Trinité.
At the roundabout, continue straight into the village. After a few hundred meters, a large car park will be found on the left.

From the car park, follow the pedestrian path heading toward Monte Rosa for a few hundred meters, then take the left-hand trail that climbs steeply through the larch forest, gaining elevation quickly.
Several crossroads are encountered along the way, but follow the main track until you exit the forest, where the path veers to the right.
At the next junction, turn left (the other trail leads to Piccolo Rothorn) and continue to a small rocky step, which can be climbed directly with the help of a metal rope.
Now ascend alpine pastures until reaching the site of the former Cozzi bivouac, destroyed nearly forty years ago.
From here, traverse left, leaving the pasture area and entering the rocky terrain.
After a long traverse, turn right into a rocky small valley, following it to the base of the last rock formations. With the aid of a metal cable, climb onto the ridge.
Here you join the more frequented trail coming from Val d’Ayas.
Follow the ridge, which includes some steeper and exposed sections, until reaching the final small rock step.
Climb this rocky section carefully, using the metal cables, to reach the summit, where you are rewarded with spectacular views of Monte Rosa.
The descent follows the same route, taking care on the rocky sections.