Rifugio Deffeyes and Passo Alto an unforgettable trek
The Deffeyes Refuge and Passo Alto are must-visit destinations for trekkers.

Where is the Deffeyes Refuge and why is it such a beloved destination for trekkers?
The Deffeyes Refuge (2,494 m) is located in the La Thuile Valley, in Aosta Valley, and is one of the most picturesque destinations of the Alta Via n° 2. This area is famous for its unspoiled nature, mountain lakes, and breathtaking views of the peaks of Mont Blanc, the Grandes Jorasses, and the Rutor. The refuge is named after the geologist Deffeyes and is accessible from La Joux, a small village located just above La Thuile.
Where does the hike to the Deffeyes Refuge and Passo Alto start?
The starting point is located at La Joux (1,600 m), an area easily reachable by car from La Thuile. From here, the trail begins following the path of the Alta Via n° 2, one of the most fascinating hiking routes in the entire Aosta Valley. The path starts by crossing larch forests and crystal-clear streams, with a continuous alternation of climbs and flat sections that make the hike always varied and enjoyable.
How long does the hike to the Deffeyes Refuge and Passo Alto take?
It is a long and challenging trek, but extremely rewarding. The entire route requires over 9 hours of walking (round trip) and has a height difference of about 1,300 meters. For those who want to fully enjoy the day, it is advisable to leave early in the morning and bring water and food, as well as the appropriate equipment for high altitude.
What is the trail like from La Joux to the Deffeyes Refuge?
The trail initially develops between forests and alpine meadows, then gently ascends towards the Rutor valley. After about two hours of walking, a panoramic point is reached that offers a spectacular view of the Rutor glacier and the underlying waterfalls. From here, the landscape changes completely: one enters a high mountain environment, where vegetation becomes sparse and rocks dominate the scene.
What can be seen along the way to the Deffeyes Refuge?
During the ascent, numerous alpine lakes can be admired, including Lake Rutor, nestled among the rocks and pastures. The views of the Mont Blanc massif are continuous, with the Grandes Jorasses and the summit of Rutor dominating the horizon. The fauna is also a highlight: it is not uncommon to encounter marmots, chamois, and eagles soaring over the ridges.
What is the Deffeyes Refuge like and what services does it offer?
The Deffeyes Refuge is located in a spectacular position, at the foot of the Rutor glacier. It offers refreshments and accommodation for hikers, with typical Aosta Valley cuisine and a warm welcome. Many trekkers choose to stop here for a break or to spend the night before tackling the Passo Alto (Haut Pas). From the refuge's terrace, one can enjoy a breathtaking view that spans from Mont Blanc to Gran Paradiso.
How do you reach Passo Alto (Haut Pas) from the Deffeyes Refuge?
From the refuge, continue northeast following the signs for Passo Alto, at an altitude of 2,860 meters. The trail is well marked but requires attention: the terrain becomes steeper and rockier, with some exposed sections. However, the effort is well rewarded by the spectacular view that opens up once the saddle of the pass is reached.
What panoramas can be admired from Passo Alto?
From Passo Alto, one can enjoy one of the most magnificent panoramas in the entire La Thuile Valley. In front rise the peaks of the Rochefort Group, the Grandes Jorasses, and the Grande Rochère, while behind one can see the valleys of Rutor and the ridges leading to Col de Bard and Testa di Serena. The feeling of being suspended between sky and mountains is truly unique.
What is the difficulty of the route to Passo Alto?
The trek is of medium-high level, suitable for trained hikers accustomed to walking at altitude. The height difference of 1,300 meters and the overall duration of over 9 hours require good physical preparation. In case of bad weather or residual snow, the stretch towards the pass can be more challenging.
What is the best time to climb to the Deffeyes Refuge and Passo Alto?
The ideal period is from late June to late September when the trails are free of snow and the refuge is open. In summer, the meadows are in bloom and the alpine lakes show intense colors, offering unforgettable photographic scenery. September, in particular, provides clear days and a quieter atmosphere, perfect for those who love the peace of the mountains.
Are there any useful tips for those who want to undertake this hike?
It is advisable to wear hiking boots, bring trekking poles, and dress in layers. Although the trail is well marked, it is wise to have a map or a GPS track with you. In case of doubt about the weather, it is always best to check with the tourist office in La Thuile or directly at the refuge.