• Cultural

Erratic boulder discovery trail

Discover the fabulous voyage of the mysterious boulder called "Pierre à Martin" and be amazed by the view on the Leman lake.

Cultural Erratic boulder discovery trail Ballaison


Departing from Ballaison (74140)
Average length : 00h20
Distance : 1km
Signed walking trail

The Hill of The Madonna overlooks the field where you find the Pierre à Martin. The vines, like the mysterious erratic block, are the legacy of a glacial epoch:
with its advances, retreats and final melting, this giant transformed the landscape and shaped its soils… What more is needed to fuel the legends !

Way and back
Total elevation gain : 20m
Vertical drop : 20m

Further informations


    1 1

    Great Idea: visit the wine cellars and taste the Savoie de Crépy wine. Local products for sale.


    Languages spoken : French
    Languages of documentation : English, French
    Languages informatives signs : English, French
    Adapted to all-terrain strollers

    Period of practice

    All year round.

    • Parking


    74140 Ballaison
    Departing from : Ballaison (74140)
    Latitude : 46.300255 - Longitude : 6.338908
    Information update on 23/05/2022 by Syndicat Intercommunal d'Aménagement du Chablais