Loisirs 74
Free · Open access

Cascade mystérieuse

At the spot known as L'Arbelay, at 1 164 m above Chinaillon, the Nant du Chinaillon hurtles down a narrow gorge for some thirty metres — a shaded twenty-minute walk, free of charge, and a legend about the village's very beginnings.

The Cascade mystérieuse plunging into its narrow gorge between the fir trees, Le Grand-Bornand
Photo : Bénédicte · merci ! 🦆
At a glance
Type
Natural waterfall (~30 m, narrow gorge)
Access
Open access · Free
Price
Free
Duration
~20 min walk from the trailhead
Best season
Spring (snowmelt) to autumn — open 15/04 to 15/11
Town
Le Grand-Bornand (Chinaillon)

Official source →

What is Cascade mystérieuse

The Cascade mystérieuse is one of Le Grand-Bornand's best-kept secrets: here the Nant du Chinaillon squeezes into a narrow gorge and tumbles around thirty metres between two high rock walls, in the heart of a cool beech forest at the spot known as L'Arbelay, at about 1 164 m above sea level.

Its name — the "mysterious waterfall" — is intriguing, and its origin remains uncertain; the legend, meanwhile, raises a smile: it was at the foot of this fall that the very first couple of Bornandins (the people of Le Grand-Bornand) are said to have met, giving birth to the village. Locals have passed the story down from generation to generation.

Getting there is more of a stroll than a hike: about twenty minutes' walk in the shade of the beech trees, starting from the route de l'Envers du Chinaillon, the resort's high-altitude village. A few wooden staircases punctuate the path — the spot is pleasant and refreshing even at the height of summer.

The show is at its best in spring, when the snowmelt swells the stream; in autumn, the beech forest blazes with colour. The site is freely accessible from 15 April to 15 November, outside the snow season.

Activities

What you can do here

Practical

Practical information

Waterfall
Around thirty metres, in a narrow gorge of the Nant du Chinaillon
Approach walk
~20 min · "niveau vert" (easy) · shaded trail with wooden staircases
Trailhead
Route de l'Envers du Chinaillon — parking de la Mottaz (to be confirmed on site)
Locality
L'Arbelay, 1 164 m, 74450 Le Grand-Bornand
Price
Open access, free of charge
Season
From 15 April to 15 November (2026 calendar), depending on snow cover and weather
Best time
Spring for the flow (snowmelt) · autumn for the colours of the beech forest
When to visit

When to visit

From spring to autumn (the site is open from 15 April to 15 November); in spring for the power of the fall, early in the morning in summer for coolness and quiet
Winter

Winter season

Winter access window
Not specified
Winter infrastructure
Not specified
Snow panorama
Not specified
Equipment mandated
Loi Montagne II — winter tyres or chains required (1 Nov – 31 Mar)
Nearby

Where to eat, drink, stay

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Photos

Gallery

FAQ

Frequently asked questions

Why is the waterfall called "mysterious"?

The origin of the name remains uncertain — that is part of the mystery. Local legend, for its part, tells that the very first couple of Bornandins met at the foot of the fall.

Is the walk difficult?

No: it is a "niveau vert" (easy-grade) stroll, about twenty minutes in the shade of the beech forest, with a few wooden staircases. It is still a mountain path, though — good shoes are recommended.

Is there a charge for access?

No, access is open and free of charge, from 15 April to 15 November depending on snow cover and weather.

When is the best time to see it?

In spring, when the snowmelt swells the Nant du Chinaillon, the fall is at its most impressive; in autumn, the beech forest blazes with colour. In summer, go early in the morning or at the end of the day.

Sources

Sources & verification

Multi-source verification at publication. Information may change — confirm with the official operator before travelling.

Published 18 juillet 2026·Updated 18/07/26

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