Rifugio Bonatti loop
Warnings
- Crowded trail in August
- Alternative descent via Pra Sec is steeper
1 / 2Map & route
GPX track — verify on the ground before hiking
Fitness level
~2100 kcal estimated
From the car park at Lavachey, in the wild heart of Val Ferret, the loop climbs to Rifugio Bonatti (2025 m) along a section of the legendary Tour du Mont Blanc. It is perhaps the most spectacular panoramic balcony on the Italian side of the massif: as you gain height, the north faces of the Grandes Jorasses (4208 m), the Dent du Géant, the Aiguille de Rochefort and, further south, Mont Dolent — where the borders of Italy, France and Switzerland meet — line up across the valley. The trail crosses high pastures still grazed in summer, with dry-stone tabià and herds of Valdostana cattle, offering constant views of the hanging glaciers that spill from Mont Blanc. The refuge, named after Walter Bonatti, who made Val Ferret his alpine home, has a terrace looking straight onto the massif and is a classic TMB stopover. The return can close the loop by descending to Pra Sec or by retracing the outward path. The modest ascent (620 m) and consistently good footing make it suitable for families with children used to walking; in high season it is worth booking lunch at the refuge.
Along the route: from Lavachey (1642 m), the path passes Rifugio Walter Bonatti (2025 m) — Viewpoint over Mont Blanc and Grandes Jorasses, to Lavachey (1642 m). Along the way you reach the Bonatti refuge, a useful base. The skyline is dominated by Monte Bianco (4808 m), Grandes Jorasses (4208 m).
Earth sciences
Geology & landscape
The loop crosses the eastern Mont Blanc massif slope on gneiss and calcschists with deformed granite outcrops. The TMB trail follows Würmian glacial deposits of the Miage glacier with clearly visible lateral moraines. Below 1900 m, Ferret stream alluvial deposits and paleosols on decomposed moraines dominate. Forested slopes show acid soils with larch and rhododendron. The Miage glacier, a monitored glaciological front, shows evident retreat with proglacial lakes and recent lacustrine deposits. Marble and dolomitic limestone outcrops indicate the massif sedimentary cover.
History & culture
The trail follows the Tour du Mont Blanc, a major alpine pilgrimage route. Rifugio Bonatti celebrates Walter Bonatti, pioneer of Italian alpine exploration.
Water sources
Water at Rifugio Bonatti. Carry a bottle from Lavachey for the climb.
Getting there
Summer Savda bus to Val Ferret from Courmayeur. Local taxi by reservation.
Nearby peaks
Refuges & bivouacs
Photo gallery
Photos are published immediately. JPG/PNG/WebP, max 6 MB.
Flora along the trail
Adjacent stages
ACurated and verified by Andrea Rama
Data source: Catasto Sentieri Regione Autonoma VdA · Open data — DGR 899/2014
Last verified:
Val Ferret
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