




Alpine hike passing through emblematic natural sites to venture behind the limestone cliffs of the Fiz and reach the largest lapiaz in Europe: the Désert de Platé, a listed natural site.
From Plaine-Joux, follow the motorable track which crosses the ski resort and will lead you to Ayères des Pierrières. A path on your left winds through scree and large boulders to reach the cable passage and the ladders going up to Dérochoir. You then enter the Passy nature reserve and enjoy a magnificent view over the valley of Sales.
From the Passage du Dérochoir, turn left towards the Col de la Portette and then descend to the Platé refuge. You will then go south to descend the chimney of Platé by a narrow and steep path. At the bottom of the descent, turn left to join Plaine-Joux.
Mountain view
Panoramic view
Mountain location
In a nature reserve
Close to a public transportation
Office de Tourisme de Passy - 20/11/2025
www.passy-mont-blanc.com
Report a problem
From 15/06 to 27/10 daily.
The trail is not passable before the opening and after the closing of the Dérochoir (municipal by-law). Please contact the tourist office if in doubt.
Subject to favorable weather.
Rock
Stone
Ground
Not suitable for strollers
Phone : 04 50 58 80 52
Email : info@passy-mont-blanc.com
Facebook : https://www.facebook.com/Passymontblanc/
Cable passage and ladders to climb to the Dérochoir.
1) Passy Paine-Joux - 2) Ayères des Pierrières - 3) Passe du Dérochoir - 4) Col de la Portette - 5) Refuge de Platé - 6) Les Egratz - 7) Guébriant
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