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Walking itinerary : Semy le Bouaz loop
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Description
Hike through the foothills of the Cornettes de Bise, on the heights of Vacheresse. Discover the Fontaine lake and the surrounding marshes, as well as the superb view of Lake Geneva from the Sémy mountain pasture.
Starting from the Lac de Fontaine, the route takes you along a mountain pasture path to the place called Sémy.
Take the time to walk around this beautiful mountain lake, nestled under the Mont de Chillon. This natural setting is home to several aquatic species, including the fario trout, the rainbow trout and the minnow, making this area a popular spot for many fishing enthusiasts.
The route continues along a ridge path to the Sémy mountain chalet. Here, the view of Lake Geneva is unique. Overlooking the Vallon de Bise, various panoramas of the cliffs of Mont Chauffé, the Cornettes de Bise, the mountain pastures of Ubine and the Mont de Grange await you.
Once back down to the Quatres Chemins crossroads, the return journey follows the Eau Noire stream. This watercourse forms the wetland of the Léchère marshes, next to the Fontaine lake, your starting point.
Technical Information
Altimetric profile
Starting point
Points of interest
Date and time
- From 01/06/2026 to 15/10/2026
Additional information
Open period
From 01/06 to 15/10 daily.
Check with tourist offices in advance to find out the current access conditions.
Subject to favorable snow and weather conditions.
Sustainable tourism
To respect farming practices, natural areas and wildlife, please keep your dogs on a lead and pick up after them. Keep and sort your rubbish, stay on the paths and close the fences.
Updated by
Office de Tourisme Leman Mountains Explore - 24/11/2025
leman-mountains-explore.com
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Environments
Lakeside or by stretch of water
Forest location
Lake view
Mountain view
Mountain location
Waterside
Panoramic view
Sensitive Natural Area
Contact
Phone : 04 50 73 02 90
Email : abondance@ot-peva.com
Website : https://leman-mountains-explore.com
Type of land
Stone
Ground
Grit
Not suitable for strollers
Location complements
Access (car) : In the Abondance valley, at Vacheresse, take the direction of Bise-Ubine. The Fontaine lake is located on the road.
Topo guides and map references
Topo guides references :
Hiking maps and guidebooks are available for purchase at tourist offices throughout the Evian and Abondance Valley region.
Map references :
- Carto-guide 65 balades et randonnées au pays d'Evian vallée d'Abondance
- Carte des itinéraires pédestres des Portes du Soleil en France et en Suisse
- TOP 25 IGN N°3528 ET Morzine Massif du Chablais Les Portes du Soleil
Reception complements
Whatever your hike, remember to take cereal bars, sufficient water, sunglasses, sun cream, a small first aid kit, as well as clothes adapted to your outing according to the season and the weather forecast.
Guidebook with maps/step-by-step
1/ Start: Lac de Fontaine.
2/ From the directional post "Lac de Fontaine", take the direction of "Sémy". Always follow this direction, you will pass by "Bouaz Dessous" and "Les Derrières de Sémy".
3/ At the "Sémy" post, follow "Les Quatres Chemins". Then, at the intersection "Les Quatres Chemins", follow the direction of "Lac de Fontaine par Chalets de Fontaine". Always follow this direction, you will pass by "Chalets de Fontaine" before reaching your starting point.
Animals
Yes. Dogs must be kept on a leash due to the presence of livestock and wildlife.
Livestock guard dogs are present in this area, so it is recommended that you adapt your behaviour to minimise disturbance to the livestock and avoid triggering the dogs (barking, approaching, etc.). If the dogs approach,
